Quality Control and Proficiency Samples
SPEX CERTIPREP LLC 3P Hardness QC CRM 250 mL
NSI Lab Solutions QCI-137 Hardness QC CRM, 250mL Single
CROSSTEX INTERNATIONAL GEOBACULLUS STEAROTHERMOP 10ML
GP Sus-G. stearo Growth Promotion Test Suspensions (QC Organisms)
Verichem Laboratories Reference Kit Matrix Plus™ Chemistry 1 X 15 mL
Protein based, ready-to-use liquid. No glycols, azides or surfactants. Known concentrations verified against available NIST standard reference material. Glucose, Urea Nitrogen, Creatinine, Calcium, Phosphorus, Magnesium, Triglyceride Analytes
ERA WATERS CORP TRACE METALS
One 15 mL screw-cap vial yields up to 1 liter after dilution. Use with AA, ICP-OES or ICP-MS and selected colorimetric methods.
ERA WATERS CORP HETEROTROPHIC PLATE COUNT
Each sample is one lyophilized standard containing a Heterotrophic bacteria present in the range 5-500 CFU/mL or MPN/mL. Use with the Standard Methods 9215B - Pour Plate Method, and Most Probable Number (MPN) Method (simplate).
SPEX CERTIPREP LLC 3P TRACE METALS PT
(NSI by Zeptometrix) Wastewater Trace Metals PT Sample, 2 x 21 mL amber vial set