Phthalic acid, bis-butyl ester, certified, 0.5g Back Catalog number: C16171000 Availability: In the manufacturer's stock Price on request - + Recommended 50112 Anion Mix #1 Price on request 54235 Selenium (IV) Selenite, 1000µg/ml in Water, 100ml Price on request 54147 Chlorite (ClO2-), 100µg/ml in Water, 100ml Price on request