Wastewater Coliform Microbe - SM 9221, WP QR 1x250ml D61.5mm FB x2 The integrated non-return valve avoids

The integrated non-return valve avoids evaporation of solvents and lets flow ambient air into the bottle in case of vacuum

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Chlorfluazuron [CAS:71422-67-8] 1000ug/ml in Acetone

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Wastewater Coliform Microbe - SM 9221, WP QR 1x250ml D61.5mm FB x2 The integrated non-return valve avoidsEach PT sample is one lyophilized quantitative standard for use with Standard Methods 9221 or similar multiple tube techniques. CRM also includes one blank sample. Each standard can be used for total coliform, fecal coliform, and E. coli which are present in the range of 202400 MPN 100 mL.