M105776-5ml | Standard for GC, ≥99%(GC)

M813182-5ml | Standard for GC，>99%(GC)

CCHM700032 | 98.5%

R013276-500ml | 99%

R095951-5ml | ≥99%(GC)（标准试剂）

CCEM501785 | 99.1%

CCEM501785 | 99.1%

CCEM500355 | >95%

CCHM701660 | 99.9%

CCHM701612 | 98.2%