As @ 1000 µg/mL in 5% HNO3, 100ml Back Catalog number: VHG-PASN-100 Availability: In the manufacturer's stock Price on request - + Recommended 511-946 1000 ppmC standard KHP, 100ml Price on request 5190-8293 Manganese, 1000ug/ml, 100ml 24,36 € 57424 Chromium (Cr), 1µg/ml in 2%-HNO3 / Water, 100ml Price on request