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双(2-羟苯亚胺)乙烷 GR for analysis Reag. Ph Eur
ChlorinePowderPacksfornon-Merckphotometersfor10-mlsamples(freechlorine)Method:photometric,DPD0-2.00mg/lCl2100TestsSpectroquant®
吸收瓶
PLATE,CAM
ER,U/SONICSENSOR,900CNTRL
氯仿检测管NO.137L
小型空气采样罐Mini-Can套件
HQ40dPortableMeterKitwithLBOD101LuminescentDissolvedOxygen(LDO)ProbeforBODMeasurement
GF/A系列
U型多孔玻板吸收管
AmmoniumCellTestA6/25252072_Method:photometric_0.20-8.00mg/lNH4-N0.26-10.30mg/lNH4+25Tests
