Carotenoids and Chlorophylls

• Pigment standards derived primarily from phytoplankton
• Ready-to-use HPLC grade standards with the concentrations provided 
• Especially applicable in calibration of instruments, e.g., HPLC
• Shipped in dry ice all over the world
• Certificate-of-Analysis shows the concentration, the purity and the HPLC chromatogram

The chlorophylls and their degradation products are dissolved in 90% acetone and most of the carotenoids are in 100% ethanol except aphanizophyll, astaxanthin, capsaxanthin, α-carotene, α-cryptoxanthin, bacteriochlorophyll a, β-carotene, β-cryptoxanthin,  lycopene, mutatoxanthin, myxoxanthophyll and 4-keto-myxoxanthophyll, which are all in 100% acetone. 

The pigment standards are supplied in sealed vials of 2.5 ml and contain a nitrogen atmosphere. When stored frozen  (below -20 °C), the pigments are stable for at least three years. The standards should, however, be used immediately after breaking the seal. Certificates-of-Analysis specifying the concentration, purity stability, storage and handling accompany the standards when shipped in dry ice.