$61.43

Water Hardness Indicator, 0.5% (w/v) Eriochrome Black T in 2-Methoxyethanol - 9300-16

$34.36

Water Hardness Indicator, 0.5% (w/v) Eriochrome Black T in 2-Methoxyethanol - 9300-4

$100.55

Water Hardness Indicator, 0.5% (w/v) Eriochrome Black T in 2-Methoxyethanol - 9300-32

$318.44

Eriochrome Black T, 2% (w/v) in 40% Triethanolamine/60% Methanol - R2899100-1C

$58.27

Eriochrome Black T, 0.4 g/L in 90% Alcohol - R2896000-100C

$124.71

Eriochrome Black T, 0.4 g/L in 90% Alcohol - R2896000-500C

$153.95

Triethanolamine, 20% (w/v) - R8695200-500C