Cr @ 1000 µg/mL in 5% HCl, 100ml

CONOSTAN PremiSolv - 1Gallon (3,78L)

TOC/TIC Mixed Standard, 1000ppm each in Water, 500ml

Method 200.8/1638/1640 Internal Standard, 10µg/ml in 2%-HNO3, 4x25ml