ANSI/ASHRAE Standard 97-1983 (RA 89) Published standard. (Reaffirmation of ANSI/ASHRAE Standard 97-1983)
Sealed Glass Tube Method to Test the Chemical Stability of Material for Use Within Refrigerant Systems
1 PURPOSE. This standard establishes a test procedure, utilizing sealed glass tubes, for the evaluation of materials for use in refrigerant systems.
2 SCOPE
2.1 This standard describes the preparation of sealed glass tubes, and the procedure for charging them with refrigerant and with the materials to be tested. A procedure for aging the tubes is described. The tubes are evaluated by quantitative and/or qualitative observation of the tube contents to yield information for determining the compatibility or chemical stability of materials in the refrigerant environment.
2.2 The technique described can be used for evaluating many different types of materials. Therefore, the standard does not describe the detailed preparation of the materials to be tested prior to placing them in the glass tubes. Except for some general observations, this is left to the discretion of the experimenter. The tubes are generally aged at temperatures in the range of 125°C (257°F) to 200°C (392°F). The method of analyzing the aged tube is also left to the discretion of the experimenter. Suggestions are made concerning handling the tubes, but the exact analytical method chosen depends upon the equipment available and the intended purpose of the test.
2.3 DETAILED SAFETY PRECAUTIONS ARE INCLUDED. Properly performing this test requires careful attention to the detailed experimental technique, and careful adherence to the safety procedures recommended.
SPC 97-1983R - Revision project committee authorized 94/01/26. (TPS revised 97/6/25)
Sealed Glass Tube Method to Test the Chemical Stability of Materials for Use Within Refrigerant Systems
1 Purpose. This standard establishes a test procedure, utilizing sealed glass tubes, for the evaluation of materials for use in refrigerant systems.
2 Scope
2.1 This standard describes the preparation of sealed glass tubes, and the procedure for charging them with refrigerant, lubricant, other materials to be tested, or combinations of these.
2.2 A procedure for aging the tubes, usually at elevated temperatures, is described. The tubes are evaluated by quantitative or qualitative analysis, or both, of the tube contents to yield information for determining the compatibility or chemical stability of materials to refrigerant systems.
2.3 The technique described can be used for evaluating many different types of materials. Therefore, the standard does not describe in detail the preparation of the materials to be tested prior to placing them in the glass tubes, the conditions of exposure, nor the methods of analysis.
2.4 Detailed safety precautions are includedin Section 8 Safety.
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