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Color can be one of the most obvious indications of contamination or deterioration. For this reason, color specifications have been set by organizations such as ACS, USP, ASTM, and EP for many pharmaceuticals, chemicals, and other products. Color is also an important measurement for water and wastewater.
Ricca Chemical Company manufactures a variety of color standards:
- APHA (Hazen or Platinum-Cobalt) Color Standards
- Used, under various names, by almost every organization concerned with color measurement
- Most useful in cases where a yellow or yellow-brown color indicates impurity or decomposition
- Levels from 2 color units to 500 color units available as Group Nos. 2230 - 2230.450
- USP / EP Primary Color Standards
- Cobaltous Chloride CS (Red Primary Solution), Group No. 2210
- Cupric Sulfate CS (Blue Primary Solution), Group No. 2495
- Ferric Chloride CS (Yellow Primary Solution), Group No. 3110
- USP Matching Fluids
- A series of 20 standards of various colors
- Prepared from the USP Primary Color Standards according to the latest United States Pharmacopeia specifications
- Available as Group Nos. 4621.A - 4621.T
- EP Reference Solutions
- Five series of standards of the same hue, with varying color intensities in each series
- Prepared from the EP Primary Color Standards according to the latest European Pharmacopoeia specifications
- Contact us for more information
- Gardner Color Standards
- A series of 15 liquid color standards prepared to ASTM D 1544-58 T specifications
- For more accurate color measurement of liquids (as an alternative to glass filters)
- Available as Group Nos. 3226.01 - 3226.15
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