Ammonium sulfate, analytical standard, for Nitrogen Determination According to Kjeldahl Method, traceable to NIST SRM 194

Mevinphos, analytical standard (Supelco)

2-Methoxy-4-Vinylphenol, analytical standard

L-Proline Hydrochloride 100 mM amino acid in 0.1 M HCl, analytical standard

Acetone Dimethyl Acetal, analytical standard

Acetone Dimethyl Acetal, analytical standard

Ethosuximide, analytical standard

Cyclopentylalbendazole, analytical standard

Dicyclopentadiene, analytical standard (Supelco)

Sodium sulfate anhydrous, analytical standard, PESTANAL®