EPA Method 531.1 Individual Analytes Back Catalog number: 30041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4498-ASS-AC Standard Solution for TLC, ISO 12228 2 Analytes, each concentration as listed in acetone; unit: 1x1mL 2900.27 Cholesterol 1mg/mL 1583.30 Betulin 5mg/mL Silylating agent 3916.8-1ML N-methyl-N-(trimethylsilyl)-heptafluorobutyramide (M Price on request 92070 Fluorene, 100µg/ml in Acetonitrile, 1ml Price on request S-4426-50-100PE n-Alkanes mixture C20+C40 1140,20 Eicosane 1160,40 n-Tetracontane Conc: 100µg each/mL in n-Pentane Units: 5mL in Screw-cap bottles Price on request