Historical
ISO 8009-7:1985
Reusable rubber contraceptive diaphragms -- Part 7: Determination of compression resistance of coil spring and flat spring diaphragms
Specifies a measuring method. This method is not applicable to diaphragms with springs designed to form an arc when compressed. Compression of the article across its diameter with a mass of 280 g using a suitable apparatus. Determination of the change in diameter after 15 s.
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International Organization for Standardization [iso]