BW901075 | 99.5%

X112050-25ml | Standard for GC, ≥99.9%(GC), xylene isomer and ethyl benzene

X112054-500ml | ACS, ≥98.5%, isomers plus ethylbenzene

X820584-5ml | Standard for GC，99.5%(GC)(二甲苯异构体+乙基苯）

X820584-25ml | Standard for GC，99.5%(GC)(二甲苯异构体+乙基苯）

NCSZ-P2O5-15μg/mL | 15μg/mL

NCS1876316 | 500μg/mL

NCS1876344 | 30μg/mL

NCS1876307 | 8mg/L

NCSZ-COD(Mn)-5.6μg/mL | 5.6μg/mL