1664 Oil & Grease Calibration Level #2

1-(4-Isopropylphenyl)urea, certified, 0.1g

Perfluorobutyric acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2218-54-4

Multi-Element Sol.1, 10µg/mL in 5%HNO3 /H2O, 100ml