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Capitol Scientific offers the full line of Ricca Chemical's EP Colorimetric Standards for your laboratory. The U.S. Pharmacopoeia Reference for these colorimetric standards is: USP-24 Monograph 631 Color and Achromaticity.
The EP Color Scale (European Pharmacopoeia) is a visual liquid color scale used within the pharmaceutical manufacturing industry. The EP Color Scale is comprised of three primary color standard solutions which include: