Ammonium (NH4+)

GC-IRMS Standards (C15 (?13C: -30.22); C20 (?13C: -33.06); C25 (?13C: -28.21)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no.

SAE 40Motor Oil

Botryococcane C32-C34, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. - / 100664-68-4 / 76060-38-3