A800494-5ml | standard for GC，≥99.5%(GC)， 含0.01%的乙酸铵阻聚剂

A800734-5ml | Standard for GC，>99%（GC)

Supelco-S#PHR2107-3X1.2ML | Pharmaceutical Secondary Stand

W10466-25ml | ≥98%

1ST005046-50%(w/w)-W-1ml | 50%(w/w) in H2O

Y79538-1g | ≥95%

V28298-100mg | 95%

T26426-1g | ≥95%

Y63782-1g | 95%

R220444-1g | 94% (GC)