Labthink Introduces New Beer PET Bottle Carbon Dioxide (CO2) Permeation Testing Instrument

Labthink Introduces New Beer PET Bottle Carbon Dioxide (CO2) Permeation Testing Instrument

Labthink?www.labthink.cn?has newly developed beer PET bottle carbon Dioxide CO2 permeation testing instrument, PERME G2/130 Differential Pressure Package Gas Permeation Testing Instruments,  to test carbon dioxide permeation rate for beverage industry. This testing instrument can rapidly test the carbon dioxide permeation rate so as to bring forward evidences for beer shelf life confirmation.

Besides, this Labthink PERME G2/130 Differential Pressure Package Gas Permeation Testing Instruments can be widely applied in gas permeation testing of plastic, metal, glass and other finished packages. The test gases include air, oxygen, nitrogen and carbon dioxide. The finished packages include various bottles, punches, boxes, cans and barrels, as beverage bottles, tin cans, milk bag & box, oil containers and other metal/non-metal packages.

 

Specifications:

Testing Range: 0.0001?100ml/pkg·day

Specimen Range: 1, 2 or 3

Humidity: closed mode: 100%RH?0%RH?2%RH?98.5%RH

         Open mode: ambient temperature

Testing Gases: Oxygen, Nitrogen or carbon dioxide

Air Source Pressure: 0.4MPa?0.6 MPa

Specimen Size: Closed mode: max. out diameter is less than ?114mm, height is less than 360 mm; min. inner diameter of bottle mouth is 8mm; max. out diameter is less than 50mm (also customization)

Open mode: max. size is no less than?195mm

Dimensions: 670 mm?L?× 490 mm?B?× 653 mm?H?

 

PERME is one of the product brands of Labthink Instruments CO., Ltd.

 

Labthink Instruments Co., Ltd.

No. 144 Wuyingshan Road, Jinan 250031, China

Tracy Bao  info@labthink.cn

Tel: 0086 531 85061153  fax:0086 531 85812140

 

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink is devoted to share excellent quality testing and control techniques with global clients and is known for wide coverage of international testing standards. Labthink participates in the drafting of several important standards of food, pharmaceutical and packaging industries, and is the excellent partner of national certification institutes.

Labthink has also established cooperation with IGT, Rycobel, Metrotec, Chilton, Moroka and other renowned distributors to provide attentive and prompt technical services for her customers in more than 40 countries and regions.

Labthink aims at creating satisfactory value and professional services for her customers.

Labthink, think for you only!

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

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Labthink Introduces New Soda PET Bottle Carbon Dioxide (CO2) Permeation Tester

Labthink Introduces New Soda PET Bottle Carbon Dioxide (CO2) Permeation Tester

  Labthink has newly developed soda PET bottle carbon dioxide (CO2) permeation tester, PERME G2/130 Differential Pressure Package Gas Permeation Tester, to test carbon dioxide permeation rate for beverage industry. This tester can test the carbon dioxide permeation rate rapidly so as to bring forward evidences for soda shelf life confirmation.

  Besides, this Labthink PERME G2/130 Differential Pressure Package Gas Permeation Tester can be widely applied in gas permeation testing of plastic, metal, glass and other finished packages. The test gases include air, oxygen, nitrogen and carbon dioxide. The finished packages include various bottles, punches, boxes, cans and barrels, such as beverage bottles, tin cans, milk bag & box, oil containers and other metal/non-metal packages.

Specifications:

Testing Range: 0.0001?100ml/pkg·day

Specimen Range: 1, 2 or 3

Humidity: closed mode: 100%RH, 0%RH, 2%RH?98.5%RH

         Open mode: ambient temperature

Testing Gases: Oxygen, Nitrogen or carbon dioxide

Air Source Pressure: 0.4MPa?0.6 MPa

Specimen Size: Closed mode: max. out diameter is less than ?114mm, height is less than 360 mm; min. inner diameter of bottle mouth is 8mm; max. out diameter is less than 50mm (also customization)

Open mode: max. size is no less than?195mm

Dimensions: 670 mm(L)× 490 mm(B)× 653 mm(H)

 

PERME is one of the product brands of Labthink Instruments CO., Ltd.

  Further information please feel free to contact Shirley Wu via trade2@labthink.cn, skype:shirley-labthink, MSN:shirleywu_labthink@hotmail.com or (tel)0086-531-85068709.

About Labthink:

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

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Labthink Introduces New Beer PET Bottle Carbon Dioxide (CO2) Permeation Instrument

Labthink Introduces New Beer PET Bottle Carbon Dioxide (CO2) Permeation Instrument

  Labthink has newly developed beer PET bottle carbon Dioxide CO2 permeation testing instrument, PERME G2/130 Differential Pressure Package Gas Permeation Testing Instruments,  to test carbon dioxide permeation rate for beverage industry. This testing instrument can rapidly test the carbon dioxide permeation rate so as to bring forward evidences for beer shelf life confirmation.

  Besides, this Labthink PERME G2/130 Differential Pressure Package Gas Permeation Testing Instruments can be widely applied in gas permeation testing of plastic, metal, glass and other finished packages. The test gases include air, oxygen, nitrogen and carbon dioxide. The finished packages include various bottles, punches, boxes, cans and barrels, as beverage bottles, tin cans, milk bag & box, oil containers and other metal/non-metal packages.

 

Specifications:

Testing Range: 0.0001?100ml/pkg•day

Specimen Range: 1, 2 or 3

Humidity: closed mode: 100%RH, 0%RH, 2%RH?98.5%RH

         Open mode: ambient temperature

Testing Gases: Oxygen, Nitrogen or carbon dioxide

Air Source Pressure: 0.4MPa?0.6 MPa

Specimen Size: Closed mode: max. out diameter is less than ?114mm, height is less than 360 mm; min. inner diameter of bottle mouth is 8mm; max. out diameter is less than 50mm (also customization)

Open mode: max. size is no less than?195mm

Dimensions: 670 mm(L)× 490 mm(B)× 653 mm(H)

 PERME is one of the product brands of Labthink Instruments CO., Ltd.

  Further information please feel free to contact Shirley Wu via trade2@labthink.cn, skype:shirley-labthink, MSN:shirleywu_labthink@hotmail.com or (tel)0086-531-85068709.

About Labthink:

  Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

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Moisture-proof Package & Quality Control Solutions

Moisture-proof Package & Quality Control Solutions

Moisture-proof Package are important for package quality, moisture-proof package quality control is therefore, very necessary. Moisture proof package is widely used in machinery, electronics, foodstuff, medicine and daily care, etc. It is a most commonly used protection against moisture during logistics. Moisture proof package avoids rusts and deterioration of the packed contents effectively. Labthink, as the excellent provider of testing instruments and testing services, integrates moisture proof methods with relevant methods for introduction.

The Moisture Transmission Testing for Moisture Proof Package

The moisture proof packages are tested according to cup method as regulated in the standards. Cup method is another name for weighing method when testing moisture. Its principle is to test the weight differences of the cup within a unit time so as to get the parameters such as moisture transmission quantity. Hereinafter, we take Labthink TSY-T series of testers as example. This series has four testers, all of which are of weighing method.

The traditional testing method is to utilize cup, constant temperature chamber and scale to measure manually. However, owing to the human interferences, there would be a great influence on testing results, such as long testing duration and low accuracy. Labthink TSY-T series of moisture transmission testers are the global innovative fully automotive testing mode, complying with testing requirements as well as standards. The only thing the operator needs to do is to place the prepared specimen into the cup and start the tester. Then, the tester operates, judges, ends and prints the testing results automatically. The whole process is intellectual with no human interferences and thus, brings forward accurate and reliable testing results.

Besides, in actual application, the packaging material must undergo procedures such as forming, inserting and heat seal, etc; and uneven thickness and inferior sealing sometimes occur. This requires testing for packaging materials as well as the whole moisture proof package. Labthink PERME W3/330 Moisture Transmission Testing System successfully meets the double testing need. This testing system is of master-satellite mode, a master base can connect 9 satellite testers so as to realize 30 kinds of materials tested at the same time.

2. Heat Seal Strength Testing for Moisture-proof
The heat seal strength of the moisture proof packages should be no less than 30N/5cm according to some standards.

Labthink HST-H3 Heat Seal Tester is for the specimen preparation of the heat seal testing procedures. Tensile tester is to separate the seal so as to test heat seal strength.

Labthink XLW series tensile testers are specialized in the heat seal strength testing for moisture proof packages. A full automatic testing can be accomplished only by pressing the button ‘Heat Seal Strength’. Besides, this tester can test the elongation, peeling strength, tearing strength and puncture of the laminated layers of the moisture proof package.

3. The Seal Performance Testing of Moisture-proof Packages

The seal performance testing of moisture-proof package can be accomplished with Labthink MFY-01 Leak Tester. This tester consists of mainframe, vacuuming device and vacuum chamber. Through testing, pinhole, crack, inferior seal and other defects can be found.

First, place the package into the vacuum chamber filled with water, set the vacuum maintaining time between 30 to 60 seconds. The vacuum rate is set as one of the following: 20, 30, 50 or 90kPa. Then, start testing to achieve preset vacuum rate and maintain the vacuum maintaining time. Observe the leakage during vacuuming and vacuum maintaining periods so as to see if there are bubbles. A single separated bubble can not be regarded as specimen leakage.

The above is a brief introduction on packaging testing standards and methods as well as testers. Labthink is willing to share more with you in quality control and testing solutions.

Labthink Instruments Co., Ltd.
No. 144 Wuyingshan Road, Jinan 250031, China
Tracy Bao info@labthink.cn
Tel: 0086 531 85061153 fax:0086 531 85812140

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The Torque Value Testing for Bottle Cap/Closure- Lock Force & Open Force

The Torque Value Testing for Bottle Cap/Closure- Lock Force & Open Force

Bottle cap torque force (bottle cap open and lock force) is one of the main factors affecting the sealing performance. Over torque force would bring great difficulties for open and winding up of bottle cup, and thus, reduce the convenience. Insufficient torque force would affect the seal performance of the container, and may further result in the leakage during transportation. Now, package design is designated to bring more convenience for fast consumption, and easy openness of bottle cap is one of the aims. When dealing such testing, ASTM D2063,ASTM D3198, ASTM D3474 are the standard, and craft-proof ring should be cut before testing.

The sealing performance of plastic bottle is the most important factor affecting package leakage and product deterioration. Excellent open easiness and sealing performance can be guaranteed through reasonable control of sealing performance and torque value. The barrier property of plastic bottles, including gas transmission quantity and water vapor transmission quantity, should also be controlled so as to guarantee the product quality during shelf-life period. For more information, please visit www.labthink.cn. Labthink Instruments Co., Ltd. is willing to have more communications and exchanges with you.

About Labthink?

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink Instruments Co., Ltd.

No. 144 Wuyingshan Road, Jinan 250031, China

Tracy Bao  info@labthink.cn

Tel: 0086 531 85061153  fax:0086 531 85812140

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink is devoted to share excellent quality testing and control techniques with global clients and is known for wide coverage of international testing standards. Labthink participates in the drafting of several important standards of food, pharmaceutical and packaging industries, and is the excellent partner of national certification institutes.

Labthink has also established cooperation with IGT, Rycobel, Metrotec, Chilton, Moroka and other renowned distributors to provide attentive and prompt technical services for her customers in more than 40 countries and regions.

Labthink aims at creating satisfactory value and professional services for her customers.

Labthink, think for you only! 

Bottle cap torque force (bottle cap open and lock force) is one of the main factors affecting the sealing performance. Over torque force would bring great difficulties for open and winding up of bottle cup, and thus, reduce the convenience. Insufficient torque force would affect the seal performance of the container, and may further result in the leakage during transportation. Now, package design is designated to bring more convenience for fast consumption, and easy openness of bottle cap is one of the aims. When dealing such testing, ASTM D2063,ASTM D3198, ASTM D3474 are the standard, and craft-proof ring should be cut before testing.

The sealing performance of plastic bottle is the most important factor affecting package leakage and product deterioration. Excellent open easiness and sealing performance can be guaranteed through reasonable control of sealing performance and torque value. The barrier property of plastic bottles, including gas transmission quantity and water vapor transmission quantity, should also be controlled so as to guarantee the product quality during shelf-life period. For more information, please visit www.labthink.cn. Labthink Instruments Co., Ltd. is willing to have more communications and exchanges with you.

About Labthink?

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink Instruments Co., Ltd.

No. 144 Wuyingshan Road, Jinan 250031, China

Tracy Bao  info@labthink.cn

Tel: 0086 531 85061153  fax:0086 531 85812140

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink is devoted to share excellent quality testing and control techniques with global clients and is known for wide coverage of international testing standards. Labthink participates in the drafting of several important standards of food, pharmaceutical and packaging industries, and is the excellent partner of national certification institutes.

Labthink has also established cooperation with IGT, Rycobel, Metrotec, Chilton, Moroka and other renowned distributors to provide attentive and prompt technical services for her customers in more than 40 countries and regions.

Labthink aims at creating satisfactory value and professional services for her customers.

Labthink, think for you only!

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Article from articlesbase.com

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WVTR-Water Vapor Transmission Rate

WVTR-Water Vapor Transmission Rate

WVTR is the abbreviation for water vapor transmission rate, which is defined as the constant rate at which water vapor permeates through a specimen film at specified conditions of temperature and relative humidity.

WVTR is of great significance for package quality. With the Water vapor transmission rate testing, effective quality control of food, drug and electronic products, etc. can be guaranteed so as to improve the storage, transportation and shelf life results and prolong shelf life span of the products.

The WVTR measurement is applicable for barrier property evaluation of plastic films, laminated films, sheets, back sheets, high barrier materials, foils, OLED, water-proof membranes and bottles, pouches, jars, boxes made of plastic, rubber, paper, glass and metal, as well as medical devices, etc.

The testing principle of WVTR is as follows: Mount the preconditioned specimen between the testing cells, clamp tightly. Nitrogen with constant humidity flows through one side of specimen, dry nitrogen flows through another side of the specimen. Under the function of humidity difference/grades, water vapor passes through the specimen and enters the lower humid side, and is carried to the sensor by the dry nitrogen. The electrical signals are generated at the sensor when the water vapor enters. Calculate the water vapor transmission rate by analyzing the electrical signals. For package test, dry nitrogen flows in the package, humid nitrogen flows around the outer side of the package.

Labthink Instruments Co., Ltd., as the leading transmission testing instrument manufacturer, devotes to providing excellent WVTR testing instruments. Recently, Labthink introduces innovative Labthink PERME W3/330 Water Vapor Permeability Tester. This tester is of master base and satellite module mode, which can effectively test 30 kinds of specimen simultaneously. This instruments complies with ISO 15106-3, GB/T 21529, DIN 53122-2, YBB 00092003 and other international standards.

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.
Mark Won Secretary@labthink.cn
Tel: +86 (0)531 85864214-8058
Fax: +86 (0)531 85812140
www.labthink.cn

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Who All Need to Buy Laboratory Instruments

Who All Need to Buy Laboratory Instruments

Laboratory instruments range from glassware items to sophisticated scientific devices that help different people to carry out different types of diagnostics. Different measuring equipment and testing instruments have been devised in the history and they have become inseparable parts of a well-equipped laboratory.

If you have a store that sells laboratory apparatus and instruments, you will be visited by different buyers who need these equipments for different laboratory setups. So, the sales of your store will be based upon how well you entertain the needs and requirements of these buyers. The following discussion provides information on who need laboratory instruments.

Laboratories in Educational Institutes
Schools as well as colleges have laboratories that provide practical education to the students in the fields like physics, biology, botany, chemistry and others. The medical institutes can’t work without a well-equipped laboratory. The laboratories set up at these places require things like test tubes, beakers, jars, heating apparatus, thermometers and scientific measuring instruments as well. You must offer quality equipments and instruments for these laboratories to aid the students in gaining practical knowledge.

Laboratories in Clinical Setups
Medical establishments, including hospitals and clinics, have laboratories where samples collected from the patients are diagnosed to find the symptoms of the problems they suffer from. These laboratories require having laboratory instruments that help in diagnosing blood samples, urine samples and the samples of saliva. Besides, these laboratories also need to have sophisticated machines like x-ray machines and ultrasound machines.

Crime Investigation Laboratories
Another type of laboratorial setup is found at crime investigation places. These laboratories are of great importance to the investigation agencies, as they carry out a number of important tasks that aid in solving criminal cases. Forensic procedures and fingerprint matching are some of the important tasks performed at these laboratories. For all such tasks, different types of laboratory instruments are required that you can offer at your store.

Industrial Laboratories
The industries, especially those indulged in the activities like production, construction, fertilizer manufacturing and other fields need to have industrial laboratories to test the quality of the products they prepare. Soil testing equipments, plastic grading equipments and many such types of equipment are required by different industries to assist in quality product manufacturing. You must learn about the equipments these industries need and offer them at your stores.

Scientific Laboratories
Finally, there are laboratories that are set up in scientific research institutes where experts carry out research for advancement in different fields. Microscopes, electroscope, spectrometer, gravimeter, dynamometer, calorimeter, ammeter, voltmeter and many such laboratory instruments are required by the experts at these laboratories to get helped in research work. Besides, there are other regular instruments that these laboratories require. Your store should have these equipments to meet the needs of scientific research experts.

You can purchase these laboratory apparatus and scientific measuring instruments from different manufacturers and suppliers that post their trade leads at online directories. Make sure that you explore the product catalogs of different manufacturers before choosing the right one. You can also compare the prices and quotes offered by different equipment provider at online business directories.

Author has wide knowledge of B2B Marketplace and Business industries. For more information on laboratory instruments and scientific measuring instruments trade leads in india, Visit online trade directory Trade.indiaMART.com

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Development of Integral Package Barrier Property Testing

Development of Integral Package Barrier Property Testing

Abstract: The varied shapes of packages are one of the obstacles for their integral barrier property testing. With the development of barrier property testing technology, the technique for integral package barrier property testing has also made great progress with various kinds of testable packages. This article makes a detailed introduction of the development of integral package barrier property testing and relevant testing cases.
Key Words: package, transmission rate, pouches, blister, differential pressure method

 

In the past, barrier property testing was only for films, which has brought great inconvenience to end package manufacturers and users. Most raw materials they bought could make barrier property testing, but the finished packages, owing to the lack of testing techniques, would bring hidden dangers to end-product quality. The difficulty for testing lies in the varied shapes of packages. However, owing to the promotion of barrier property testing, integral package barrier property testing has made great progress with more kinds of testable packages. This article makes a detailed introduction on the development of integral package barrier property testing and relevant testing cases.

1. Introduction to Integral Package Barrier Property Testing Techniques

Keeping certain shapes is the most basic characteristic for packages. Therefore, keeping the package intact is the first thing when testing. Secondly, the seal performance of testing instruments and sampling accessories should be guaranteed. Those two points are difficult to achieve for package testing, compared with film and sheet testing.

1.1 Equal Pressure Method Package Oxygen Transmission Rate Testing Techniques

The testing principles of equal pressure method oxygen transmission rate for both films and packages are similar. First, the preconditioned specimen separates the transmission chamber into two separate gas flow systems. Testing gas flows in one side of the package, such as pure oxygen or mixed gas with oxygen; high pure carrier gas flows in the other side. Though the gas pressure of two sides are the same, oxygen sub-pressures are different. Therefore, under the gradient of oxygen concentration, oxygen transmits through package and is carried to the sensor by the carrier gas. The sensor will measure the oxygen quantity in the carrier gas flow precisely, so as to work out the oxygen transmission rate of the tested package. If only specimen preparation issue can be effectively resolved, various packages are testable by this method. Testing subjects can be the integral package or a part of it, including various bottles, the connecting part of bottle cup and bottle body, bottle cup, capsule, blister, tube, injection, IV bags, flexible pipe and various ball-shape packages. Besides, the contents of tested packages can be in or not, so as to provide most reliable data for package evaluation in actual application and quality change of contents.

At present, ASTM F 1307 is the only testing standard for equal pressure method, and is applicable for all packages that can produce dry spaces inside. Moreover, equal pressure method oxygen transmission rate testing techniques can also be used under humid circumstances, and can further provide an environment with certain humidity in or out side the package.

1.2 Differential Pressure Method Package Gas Transmission Rate Testing Technique

Keeping the package shape intact is the main difficulty for differential pressure method package gas transmission rate testing. Owing to the pressure difference between the inner and outside of the package, the tested specimen might be destroyed by pressure difference without appropriate means to keep its shape, and result in meaningless testing results, or even no testing data. At present, in the field of differential pressure method gas transmission rate testing research, Labthink has made breakthrough. At the same time, Labthink has successfully extended integral package gas transmission rate testing from oxygen alone to many common inorganic gases. However, there are not many kinds of subjects can be tested with this method.

1.3 Weighing Method Package Water Vapor Transmission Rate Testing Technique

Weighing method water vapor transmission rate testing is the traditional method for package water vapor transmission rate testing; the relevant testing methods are: GB/T 6981-1986, GB/T 6982-1986 and ASTM D 3079-94. The testing process is as follows: first, put the desiccant (container is permitted) into the specimen, and seal the open place on the package wall. After preheating, put the specimen into the testing chamber with constant humidity and constant temperature for humidity and temperature test. Then, weigh the weight of the specimen at proper intervals according to the water vapor transmission performance of the package. When the transmission reaches stability, calculate the integral package water vapor transmission rate on the added weight of the specimen. However, open a mouth on the package wall is not practical, and it would always lead to operational failure and corresponding failure. Therefore, in the standards for pharmaceutical packaging materials, the desiccant is changed into distilled water or other testing solvents when using this method. Thus, there is no need to open and close the package mouth repeatedly; and the only thing needs to do is to weigh the package at certain intervals. However, the long testing periods and precision limit are the inherent shortcomings of this method.

1.4 Sensor Method Package Water Vapor Transmission Rate Testing Technique

Sensor method and different pressure method package water vapor transmission rate testing techniques are similar in the testing principle: separate the transmission cell into two isolated gas flow system by the package, one side of the package flows the carrier gas (dry); and another side is in a relative humidity. Thus, a stable water vapor concentration difference exists between the two sides of the specimen (relative humidity). Under the influence of water vapor concentration difference, water vapor transmits through the package wall and is carried to the sensor. The sensor measures the water vapor content in the carrier gas accurately so as to further calculate water vapor transmission rate of the specimen. This method is applicable for bottles, pouches, capsules, blisters, IV packages, flexible pipes and other forms of packages. Now, the testing accuracy of this method is up to 0.001g/pkg·d; the testing period is only 3 to 4 days; and the testing process is completely automatic.

2. Typical Application Examples

Usually, package barrier property testing is for bottles or certain parts of the bottle. However, package is not limited to bottle, pouches, flexible pipe and PVC trays also have broad applications, among which, the testing for pouches and small-sized package (e.g., blister) are more emphasized.

2.1 Pouches

The space maintenance of the pouches should be taken care of when using equal pressure method or sensor method. As to pouches, if the pressures inside and outside can not be well controlled, it would result in less gas transmission area and lead to data error. Therefore, the pouches should be bulged during precondition period, and it can be achieved by putting certain quantities of gas or other accessories into the pouches. At the same time, the space inside pouches should also be kept during testing process so as to avoid shriveling, especially for thin food pouches. As to IV bags, jelly pouches, stand up pouches and other thick pouches, their shriveling probability is less.

When using weighing method, how to keep the space inside the pouches is also a problem. Meanwhile, how to seal pouches after filling distilled water inside should also be considered, which increase the difficulty in actual operation.

2.2 Blisters

Blisters are usually of small volume. Therefore, they can only be tested by equal pressure method or sensor method. Furthermore, the specimen preparation can only be accomplished with customized accessories. Meanwhile, the adjustment of flowing speed during testing process should also be cautious so as to avoid sudden pressure increase and decrease caused by violent change of gas quantity, and thus, avoid influences to the specimen status.

Usually, the testing accessories for blisters are also applicable for small-sized package testing, such as capsule; and can expand to more kinds of small-sized packages conveniently.

3. Conclusions

The development of integral package barrier property testing techniques has greatly expanded the scope of barrier property testing. Now, the testing subjects have expanded to nearly all the packages, which have brought fundamental testing reform for package manufacturers and users. Meanwhile, with the leak and seal testing as well as headspace gas analysis, a more integral, effective and accurate package result can be guaranteed.

Further information please feel free to contact Shirley Wu via trade2@labthink.cn, skype:shirley-labthink, MSN:shirleywu_labthink@hotmail.com or (tel)0086-531-85068709.

Step by step video to turn one sheet of 8.5″ x 11″ cardstock into a cute container! www.yamstamps.com for more info or to leave a comment.

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