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21α(H)-25
Coumarin-d4
Glass fiber reinforced housing for extreme durability
Pre-sealed vial-closure combinations of any type are available as well
AS1KZN25-1
Potable Water Coliform Microbe, WS QR [203074][MICROLAB] 21α(H)-25Each sample set consists of lyophilized samples for the presence or absence analysis of total coliform, fecal coliform, and E. coli. The standards are applicable to all SDWA promulgated methods MF, presence absence and ONPG MUG. The Potable Water Coliform Microbe PT standard is available in all 12 monthly WS studies. The PT and QR include ten lyophilized samples and the CRM includes five lyophilized samples.