CWA Color Back Catalog number: 55140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4241-2K-IP EPA 8040 Surrogate Standard S-4241 2mg/mL each in isopropanol, 1 mL, 5 x 1mL, 5mL 2-Fluorophenol 2,4,6-Tribromophenol Price on request 72262 Sulfamerazine, 1000µg/ml in MeOH, 1ml Price on request 71943 1-Methylanthracene Price on request