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-CN-100 Cyanide (CN-)@1000mg/L in 0.1% NaOH, 100ml Price on request VHG-PSRN-100 Strontium Standard: Sr @ 1000 µg/mL in 5% HNO3, 100mL Price on request VHG-SMIN-BLK-100 Sulfur Blank (0 wt%) in 75 cSt Mineral Oil, 100ml Price on request