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This method is for the gravimetric determination of the water vapor transmission rate (WVTR) of sheet materials at 37.8°C (100°F) with an atmosphere of 90% RH on one side and a desiccant on the other.
Author | TAPPI - Technical Association of the Pulp and Paper |
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Editor | TAPPI |
Document type | Standard |
Format | File |
Confirmation date | 2018-06-12 |
ICS | 85.060 : Paper and board
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Year | 2012 |
Document history | |
Country | USA |
Keyword | ANSI 464;ANSI/TAPPI T 464;ANSI/TAPPI 464;464;ANSI/TAPPI T 464 om-2012 (R2018) |