Arsenic Standard: 1000 µg/g As in 75 cSt Hydrocarbon Oil, 50g Back Catalog number: VHG-OAS-1000-50G Availability: In the manufacturer's stock Price on request - + Recommended VHG-NCH-SET1 Nitrogen Set for ASTM D4629: N @ 0, 1, 2, 10, 20, 50, 100, 200, 500, 1000 ng/µL in Isooctane, set (10) Price on request SCP150-021-048 CONOSTAN Standard S-21+K, 500 ppm, 100g Price on request 54501 Chloride (Cl-), 1000µg/mL in Water, 500ml Price on request