硫酸钡标准品 for white standard DIN 5033
确效用标准水 10000ppm Standard for volumetric Karl Fischer Titration 1 g 10 mg H O apura
30%过氧化氢 (Perhydrol )分析级 EMSURE ISO
氯化钾溶液(标称 12.8 mS/cm) 有证电导率测量标准物质,可追溯至PTB和NIST (c=0.1 mol/l) CertiPUR
氢氧化钾 片状 GR for analysis (max. 0.003% Na) ACS, ISO, Reag. Ph Eur
缓冲溶液 for Karl Fischer Titration apura
硫氰酸汞 分析用优级纯 EMSURE Reag. Ph Eur
氰离子 IC 标准液 1,000 mg/l CN- traceable to SRM from NIST K [Zn(CN) ] in H O 1000 mg/l CN CertiPUR
氯化钠 分析级 EMSURE ACS, ISO, Reag. Ph Eur
多元素标准液 I (溶于油中) c(Ba) = 8 g/kg; c(Ca) = 4 g/kg; c(Mg) = 1 g/kg; c(Zn) = 1,6 g/kg CertiPUR
钛浓缩标准液 1000 mg Ti, (NH4)2TiF6 in H2O Titrisol
汞 ICP/MS 标准液 10 mg/l traceable to SRM from NIST Hg(NO ) in HNO 10% 1000 mg/l Hg CertiPUR
油中标准水 standard for oil samples for coulometric Karl Fischer Titration (15-30 ppm) apura