BYK-Gardner GmbH
Equipents offer detail
Equipment: Perme­a­bil­ity Cup
Equipment Type: Instrument -> Test Instrument
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Description: The BYK-Gard­ner Perme­a­bil­ity Cup is a shal­low cylin­der with a threaded flange, flat retain­ing washer and threaded ring cover. Rub­ber gas­kets are used to tightly seal the spec­i­men between the cup and the ring cover. The cup and cover are knurled for easier han­dling. Two dif­fer­ent size cups are avai­l­able: Large 25 cm² cup meets the ASTM stan­dard Small 10 cm² cup allows the use of a smaller spec­i­men and less des­ic­cant Pro­ce­dure Dur­ing a test, vapor passes from the cup through the film spec­i­men to an open con­tainer of des­ic­cant or other absor­bent mate­rial in a con­trolled envi­ron­ment. The perme­a­bil­ity cup and other con­tainer are sealed together in a larger con­tainer to pro­vide con­trol of the vapor pres­sure. Test­ing may also be set up to allow pas­sage of vapor from a solu­tion in the open con­tainer through the test film to a des­ic­cant or other absor­bent mate­rial within the perme­a­bil­ity cup.
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