GMW GMW3235 PDF

The test method defined in this document is designed to evaluate the "fogging" tendencies of all interior and air ventilation system materials. The resulting ratings influenced by the volatile organic constituents, liberated under conditions of high ambient temperatures and subsequently deposited on cooler surfaces, are determined.

Two alternative test methods are specified with different methods of evaluating the degree of fogging. Test results obtained by these test methods are not directly comparable and only that test method specified by the appropriate coding in the material specification, engineering drawing etc., shall be used.

Method A - Photometric Method: This method evaluates the volatility of organic constituents by reflectivity measurements (Coding A).

Method B - Gravimetric Method: This method determines the mass of fogging condensate on Aluminum foil by means weighing of foil before and after the fogging test (Coding B).

Note: Nothing in the specification supersedes applicable laws and regulations unless specific exemption has been obtained.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.