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1.1 This guide covers recommended procedures for handling material stored at low temperatures in mechanical freezers and liquid nitrogen freezers.

1.2 This guide covers recommendations for implementing procedures for ensuring adequate inventory control.

1.3 This guide covers recommendations for implementing procedures for safeguarding material stored at low temperatures.

1.4 This guide does not cover the development or maintenance of equipment and facilities for low-temperature storage which are covered in Guide E1564.

1.5 This guide does not cover practices for preservation by freezing which are covered in Practice E1342.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

4.1 The proper handling of material stored at low temperatures ensures that the stability of sensitive biological materials is not comprised.

4.2 Properly designed inventory control systems ensure the maximum use of freezer space, that all material can be located easily, and that any item is retrieved easily without compromising the stability of other items in the freezer.

4.3 Properly designed safety and security procedures ensure that material stored at low temperatures is not comprised during storage, and that if material is lost due to freezer failure or operational problems, replacement material is available (see Guide E1566).