Chromate Test Method: colorimetric with color-disk comparator 0.10 – 0.20 – 0.35 – 0.6 – 1.0 – 1.8 – 3.0 – 6.0 – 10 mg/l Cr 0.22 – 0.45 – 0.8 – 1.3 – 2.2 – 4.0 – 6.7 – 13 – 22 mg/l CrO₄²⁻ MQuant – 300 Tests