Quality Control and Proficiency Samples
SPEX CERTIPREP LLC 3P TOTAL CHLORINE CHECK STANDARD
(NSI by Zeptometrix) Total Chlorine Accuracy Check RM, 25 Tubes, 1.00 mg/L, Dilutes to 25mL
ERA WATERS CORP HARDNESS POTABLE WATER STANDAR
Hardness, PotableWatR One 250 mL whole-volume bottle is ready to analyze.
SPEX CERTIPREP LLC 3P Simple Nutrients Concentrate Blind
(NSI by Zeptometrix) A 21 mL concentrate for determination of Simple Nutrients. Each ampule produces 2 liters of sample. The sample includes: Ammonia as N 1.0 - 20 mg/L, Orthophosphate as P 0.5 - 5.5 mg/L, Nitrate as N 2.0 - 25 mg/L, Nitrate/Nitrite-N 2.5 - 25 mg/L
Inorganic Ventures 200.8 QC STANDARD Hg 125mL
Inorganic Ventures' Quality Control Standard 4 is a 125mL certified reference material set in a nitric acid matrix for stability. This mercury standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. See Certificate of Analysis for expiration.
ATTENTION: Inorganic Ventures is no longer supplying paper copies of Certificate of Analyses(CoA) and Safety Data Sheets (SDS). Please use this link to download your copies: https://www.inorganicventures.com/coa-sds-search