ICP-MS Tuning Solution #1 EPA 200.8

n-Propyl 4-hydroxybenzoate-propyl d7, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1246820-92-7

Benzyl butyl phthalate, 250mg

2-Hydroxyatrazine, 100µg/mL in MeOH:AC (98:2),1ml