标准油 for atomic absorption spectroscopy
钌 ICP 标准液 1,000 mg/l RuCl in HCl 7% 1000 mg/l Ru CertiPUR
铅 ICP 标准液 1,000 mg/l traceable to SRM from NIST Pb(NO ) in HNO 2-3% 1000 mg/l Pb CertiPUR
氧化镁 GR for analysis (max.0.001% SO ) ACS
水合磷钼酸 分析级 EMSURE ACS, Reag. Ph Eur
缓冲液 (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (20°C) CertiPUR