Medium test dust (MTD)

pkg of 20 g

NIST^® RM 8631b

A unit of Reference Material (RM) 8631b, an ISO Medium Test Dust (MTD), consists of 20 g of a natural mineral dust that is heterogeneous in composition and polydisperse with respect to size. RM 8631b is intended to be used as a secondary material for calibrating particle sizing instruments, especially optical particle counters, when used in conjunction with published standard methods.

RM 8631B_cert RM 8631B_SDS

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