缓冲剂 (Disodium tetraborate), tracable to SRM from NIST and PTB pH 9.18 (25°C) CertiPUR
确效用标准水 100ppm Standard for coulometric Karl Fischer Titration 1 g 0.1 mg H O apura
确效用标准水 1000ppm Standard for coulometric Karl Fischer Titration 1 g 1 mg H O apura
钼浓缩标准液 1000 mg Mo, [(NH4)6Mo7O24 4H2O in 0.7% NH4OH] Titrisol
氢氟酸 48% 分析级 EMSURE ACS,ISO,Reag. Ph Eur
硅浓缩标准液 1000 mg Si, (SiCl4 in 14% NaOH) Titrisol
药典色度标准品R系 for testing the colour intensity acc. to Ph. Eur. R1-R7 CertiPUR
铂 AAS 标准液 1,000 mg/l traceable to SRM from NIST H PtCl in HCl 2 mol/l 1000mg/l Pt CertiPUR
四硼酸二钠 di-Sodium tetraborate Spectromelt
100%发烟硝酸 分析级 EMSURE ACS, Reag. Ph Eur
聚乙烯醇 protective colloid for argentometric titration