Solution B of EPA 200.8 Cal Std 3 in 2% HNO3, (µg/mL) Antimony, Molybdenum at 20 in 2% HNO3 + Trace HF. 12 months expiry date. Traceable to NIST SRM 31XX series. ISO 9001:2015 certified, ISO/IEC 17025:2017 and ISO 17034:20166 accredited.
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