Cr, 1000 µg/mL in 5% HNO3, 100ml Back Catalog number: VHG-PCRN-100 Availability: In the manufacturer's stock Price on request - + Recommended 59929 Fluoride (F-), 1.0µg/mL in Water, 500ml Price on request VHG-V21-30-100 V21 Wear Metals Standard: 30µg/g in Hydrocarbon Oil, 100g Price on request 54139 Sulfide (S), 1000µg/mL in Water, 3 x 20ml Price on request