VV-L-825C
APPENDIX
EQUIPMENT AND PROCEDURES FOR MEASURING THE R-22 CONTENT
IN SEALED TUBES USING GAS CHROMATOGRAPHY
10. SCOPE
10.1 Scope. This appendix covers the equipment and procedures used for measuring the content of R-22 refrigerant in gases evolved during the sealed tube stability testing of refrigerant oils in accordance with ASHRAE 97.
10.2 Summary. The procedure consists of isolating the gas evolved during aging of the sealed tube, then analyzing it using gas chromatography. Concentrations of R-22 and R-12 refrigerants in the evolved gas shall then be obtained by integration of the gas chromatogram peaks.
20. APPLICABLE DOCUMENTS
20.1 Government publications. The issues of the following documents, in effect on date of invitation for bids, form a part of this specification to the extent specified herein.
Federal Specifications
BB-H-1168 - Helium, Technical. BB-N-411 - Nitrogen, Technical.
(Activities outside the Federal Government may obtain copies of federal specifications, standards and commercial item descriptions as specified in the General Information section of the Index of Federal Specifications, Standards and Commercial Item Descriptions. The Index is for sale on a subscription basis from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.)
(Single copies of this specification, and other federal specifications and commercial item descriptions required by activities outside the Federal Government for bidding purposes are available without charge from the General Services Administration, Federal Supply Service Bureau, Specification Section, Suite 8100, 470 L'Enfant Plaza, SW, Washington, DC 20407.)
(Federal Government activities may obtain copies of federal standardization documents and the Index of Federal Specifications, Standards, and Commercial Item Descriptions from established distribution points in their agencies.)
30. APPARATUS
30.1 Sealed glass tube. A sealed glass tube containing R-12, refrigeration oil, and strips of copper and steel shall be used in accordance with ASHRAE 97.
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