T819480-2.5L | 试剂级， 98.0%

T819480-500g | 试剂级， 98.0%

T819481-5ml | Standard for GC， ≥99.5% (GC)

R094137-5ml | 99.5%（GC）（标准试剂）

B27636-200mg | GC≥99%

NG-I3440-1G | 见证书

CCEM501785 | 99.1%

CCEM501785 | 99.1%

CCEM500355 | >95%

CCHM701660 | 99.9%