This standard specifies the method used for the determination of water absorption by immersion in accordance with ISO 62 method 1, applicable to transparent materials. It also specifies the particular conditions for aeronautical "glassware."
UNE-EN 2155-2:1994 history
1994UNE-EN 2155-2:1994 Aerospace series. Test methods for transparent materials for aircraft glazing. Part 2: Determination of water absorption