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Lutein analytical standard provided with UV assay for quantitative titration.
Purity (HPLC) ≥92% (This product is available with HPLC chromatogram)
U.V / Visible spectrum - E1% : 444 nm 2520 ± 100 472 nm 2320 ± 100
Melting point/freezing point : 174-181°C
Store in dry and dark place.