22-component Initial Check Verification (ICV) Standard 4. 250 mL. Contains: (µg/mL) Beryllium, Cadmium, Lead, Selenium at 5, Arsenic, Chromium, Silver, Thallium at 10, Manganese at 15, Zinc at 20, Copper at 25, Nickel at 40, Cobalt, Vanadium at 50, Antimony at 60, Iron at 100, Aluminium, Barium at 200, Calcium, Magnesium, Potassium, Sodium at 5000 in 4% HNO3 + Trace HF. 12 months expiry date. Traceable to NIST 31XX series. ISO 9001:2015 certified, ISO/IEC 17025:2017 and ISO 17034:20166 accredited.
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