Quality Control and Proficiency Samples
Restek Corporation International Stock Standard Mixture (2 components), Restek™
CAS: 8012-95-1 Molecular Formula: MFCD00131611 Molecular Weight (g/mol): 0.00 MDL Number: MFCD00131611 InChI Key: FFNDMZIBVDSQFI-UHFFFAOYSA-N PubChem CID: 68245 ChEBI: CHEBI:38701 IUPAC Name: 2-(3,4,5-trihydroxyphenyl)chromenylium-3,5,7-triol;chloride SMILES: *
SPEX CERTIPREP LLC 3P Orthophosphate P QC Conc 21mL
NSI Lab Solutions QCI-141 Orthophosphate-P QC Concentrate Certified Reference Material, 21 mL; 1/EA
Hach Company Quaternary Ammonium Compound (QAC) Standard Solution, 100 mg/L, 100 mL
For accuracy checks in Quaternary Ammonium Compound (QAC) determinations. 100 mg/L as CTAB.
GGA CONCENTRATE
(NSI by Zeptometrix) GGa Concentrate Snips for BOD5. a box of 25 single-use snips, each containing 6 mL of Glucose: Glutamic acid solution (300 mg/L total). Just snip open the tube and pour contents directly into a 300 mL BOD bottle. Yields a 2% solution of GGa as per SM 5210B. We've sterilized the solution in the snip, it is sterile indefinitely at room temperature until opened.
TOTAL CHLORINE CHECK STANDARD
(NSI by Zeptometrix) Total Chlorine Accuracy Check RM, 25 Tubes, 1.00 mg/L, Dilutes to 25mL