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Significance and Use
Two procedures, A and B, are outlined in this test method. Procedure A is used most often for development of various beverage container designs to determine the functional characteristics of the package in regard to shelf life. Procedure B is recommended for use in beverage filling operations as a quality control tool in maintaining the desired CO2 fill pressure. A loss of CO2 will affect product taste.
Procedure A involves the use of sensitive pressure and temperature monitoring equipment where a high degree of accuracy is essential, for example, a micro-pressure transducer and thermocouple for measuring pressure and temperature of the package in a closed system. Alternatively, this procedure may also use bottles closed with roll-on aluminum caps containing rubber septums. The septum is pierced with a hypodermic needle attached to a pressure transducer to obtain pressure readings. This procedure should be confined to laboratories that are practiced in this type of analytical testing.
Procedure B is more widely used when measuring the carbonation level of the package due to the simplicity of the technique. A simple Zahm-Nagle pressure assembly or Terris CO2 Analyzer is utilized.
1.1 The objective of this test method is to determine the carbon dioxide (CO2) loss from plastic beverage containers after a specified period of storage time.
1.2 Factors contributing to this pressure loss are volume expansion and the gas transport characteristics of the package including permeation and leakage.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
E380 Practice for Use of the International System of Units (Si) (the Modernized Metric System)
ICS Number Code 55.040 (Packaging materials and accessories)
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ASTM F1115-95(2008)e1, Standard Test Method for Determining the Carbon Dioxide Loss of Beverage Containers, ASTM International, West Conshohocken, PA, 2008, www.astm.orgBack to Top