Water Specification Comparison

Sigma-Aldrich Water Specifications Comparison
	CHROMASOLV LC-MS	CHROMASOLV Plus	CHROMASOLV for HPLC	ACS
UV Absorption
λ: 200 nm	≤0.022
λ: 205 nm			≤0.01
λ: 210 nm			≤0.01
λ: 230 nm	≤0.0044
λ: 250 nm			≤0.005
λ: 400 nm			≤0.005
Gradient Analysis
210 nm	≤5 mAU	≤5 mAU	≤10 mAU
254 nm	≤1 mAU	≤1 mAU	≤2 mAU
Total Impurities
Evaporation Residue	≤0.0001%	≤0.0003%	≤0.0003%
Specific Conductance				2.0 uOhm/cm (Max) @ 25C
Fluorescence 254 nm	≤1.0 ppb	≤1.0 ppb
Fluorescence 365 nm	≤1.0 ppb	≤1.0 ppb
LC-MS suitability	Passes Test
Heavy metals				≤0.01 ppm (as Pb)
Chloride	≤0.01 ppm	≤0.01 ppm		≤0.4 ppm
Fluoride	≤0.01 ppm	≤0.01 ppm
Nitrate	≤0.1 ppm	≤0.1 ppm		≤0.4 ppm
Phosphate				≤1.0 ppm
Silica				≤0.01 ppm
Sulfate	≤0.1 ppm	≤0.1 ppm		≤1.0 ppm
Silver	≤0.1 ppm
Aluminum	≤0.5 ppm
Barium	≤0.1 ppm
Calcium	≤0.1 ppm
Cadmium	≤0.05 ppm
Cobalt	≤0.02 ppm
Chromium	≤0.02 ppm
Copper	≤0.02 ppm
Iron	≤0.1 ppm
Potassium	≤0.1 ppm
Magnesium	≤0.1 ppm
Manganese	≤0.02 ppm
Sodium	≤0.1 ppm
Nickel	≤0.02 ppm
Lead	≤0.1 ppm
Tin	≤0.1 ppm
Zinc	≤0.1 ppm
Packaging Options
	CHROMASOLV LC-MS	CHROMASOLV Plus	CHROMASOLV for HPLC	ACS
Glass Bottle	39253	34877	270733	320072
VerSA-Flow^™			270733
NOWPAK^™		34877	270733
Drum			270733

For a complete list of all available unit sizes and product specifications,
simply click on the product numbers above!