Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

Importancia y uso:

5.1 The purpose of these tests is to determine water vapor transmission rate of materials by means of a simple gravimetric procedure.

5.2 Test Conditions: 

5.2.1 A WVTR result obtained in one method under one set of test conditions cannot be used to predict the result that would be obtained using the same method with a different set of conditions, or using the other method. See Appendix X3 for discussion of determining dependency of WVTR on different relative humidity (at a given temperature).

5.2.2 Test conditions that are commonly used or are considered standard in various industries or research applications are listed as Procedures A-E in Appendix X1, but use of these conditions is not mandatory in the methods herein.

5.2.3 Given the caution in 5.2.1, the selection of test conditions that closely approach exposure conditions of material in actual use is advised when possible.

5.2.4 Where tests are conducted for classification or compliance purposes, test conditions are typically defined in codes, specifications, and manufacturer’s technical literature.

Subcomité:

C16.33

Referida por:

D7425_D7425M-13R19, C1692-18, F3299-18R23, D2626_D2626M-04R20, D3468_D3468M-99R20, E1745-17R23, C0011-24A, D6630_D6630M-16R22, E2321-03R19, D3105-17R24, E0154_E0154M-08AR19, B0479-19, D6380_D6380M-03R22, C0209-20, D8257_D8257M-22, C1917-23, D8463_D8463M-23, E1549_E1549M-13R22, D4649-20, C1423-21, C0727-19R24, C1713-24, D6153-23, C0755-20, C1313_C1313M-13R19, C1278_C1278M-24, D8065_D8065M-16R23, D6434-12R18, F0624-09R24, E1677-23, C1427-21, C0928_C0928M-20A, F1249-20, D6134_D6134M-07R24, E1993_E1993M-98R20, C1126-24, D4708-24, F3510-21, C1290-16R21, D5047-17R23, C0552-22, D1970_D1970M-21, D7008-08R22, D4551-22, D6455-11R18, C1482-24E01, C1258-21A, C1809-20, C1483_C1483M-17R22, C0887-20, C1668-24, C1136-23, D7709-12R23, F2902-24, D3833_D3833M-96R19, D7106_D7106M-05R23, C0534_C0534M-24, D5886-95R23, E2556_E2556M-10R22, D2673-14R22, E0398-20, C1289-23A, D6523-22, F2407_F2407M-23A, G0021-15R21E01, D2103-23A, C0171-20, D4635-16, F2733-21, D4000-23, C0591-22, D6694_D6694M-15R23, C1321-15R20, D6826-23, C1224-22, E3069-19A, F3267-22, C0665-24, D4068-17R22, C1902-22A, E2570_E2570M-07R19, D4397-16R23, D7407-07R24, E3127-24, D4819-13R21E01, E0631-15R24, C1029-20, C0578-23, D2643_D2643M-21, C1594-23, C0647-19, C1396_C1396M-24, D5456-21E01, C1696-20, D7230-06R21

Volúmen:

04.06

Número ICS:

77.040.99 (Other methods of testing metals)

Palabras clave:

desiccant method; perm; permeability; perm-inch; steady-state; water method; water vapor permeance (WVP); water vapor transmission rate (WVTR);