1000 ppmC standard KHP, 100ml Back Catalog number: 511-946 Availability: In the manufacturer's stock Price on request - + Recommended 56232 Germanium (Ge), 100 µg/mL in 2%-HNO3 / Water, 4x25ml Price on request VHG-PCUN-100 Cu @ 1000 µg/mL in 5% HNO3, 100ml Price on request 52145A Method 200.8/1638/1640 Internal Standard, 10µg/ml in 2%-HNO3, 4x25ml Price on request