4-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride,

Custom Mix of 4-nonyl- and 4-t-octylphenol 2044.15 4-Nonylphenol (mix of isomers) 350 ng/mL 1446.14 4-tert-Octylphenol 300ng/mL

pH 6.86 Standard @ 25°C

Pentachloroaniline, 100mg