缓冲液 (citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (20°C) CertiPUR
UV/VIS 校正标准品 1 -- 吸光值 for absorbance according to Ph Eur
溴水 GR for analysis ACS,ISO,Reag. Ph Eur
70%高氯酸 分析级 (max. 0.0000005% Hg) EMSURE ACS, ISO, Reag. Ph Eur
药典色度标准品BY系 for testing the colour intensity acc. to Ph. Eur. BY1-BY7 CertiPUR
ICP 多元素标准液 XIII (15 elements in diluted nitric acid) CertiPUR
30%过氧化氢 (Perhydrol ) (高温储存稳定),分析级 EMSURE ISO