硅 ICP 标准液 1,000 mg/l traceable to SRM from NIST (SiO in NaOH 4 %) 10000 mg/l Si CertiPUR
镉浓缩标准液 1000 mg Cd, (CdCl2 in H2O) Titrisol
二乙基二硫化脲银 GR for analysis (reagent for arsenic and antimony) ACS,Reag. Ph Eur
锌 sticks, triangular cross section about 8 mm GR for analysis
溴水 GR for analysis ACS,ISO,Reag. Ph Eur
氢氟酸 48% 分析级 EMSURE ACS,ISO,Reag. Ph Eur
一水合硫酸锰 喷雾干燥,分析级 EMSURE ACS, Reag. Ph Eur
折射率标准品 n=1.4969 Toluene/water, traceable to SRM from NIST and PTB n (20°C)=1,4969 CertiPUR
铈 ICP 标准液 1,000 mg/l traceable to SRM from NIST Ce(NO ) in HNO 2-3% 1000 mg/l Ce CertiPUR