美国NIST标准品 SRM 193 Potassium Nitrate硝酸钾 90g 返回列表页

SRM 163  LA Steel, 1.0 C 拉钢 100g
SRM 165a  Glass Sand玻璃砂  75g
SRM 166c  Stainless Steel, Low-Carbon (AISI 316L)不锈钢，低碳 (AISI 316L)  100g
SRM 173c  Titanium Alloy (6Al-4V)钛合金 (6Al-4V)  50g
SRM 178  0.4C Basic Oxygen Furnace Steel 0.4C碱性氧气转炉钢 150g
SRM 179  LA Steel, High Silicon镧钢,高硅 150g
SRM 180  Fluorspar, High Grade萤石 120g
SRM 181  Lithium Ore (Spodumene)锂(锂辉石矿)  45g
SRM 182  Lithium Ore (Petalite) 锂矿石(透锂长石)  45g
SRM 183  Lithium Ore (Lepidolite)锂矿物(云母)  4g
SRM 185i  Potassium Hydrogen Phthalate, pH Standard 邻苯二甲酸钾，PH值标准 60g
SRM 186g  pH Standards, (set of 186-I-g + 186-II-g)  set
SRM 187e  Sodium Tetraborate (Borax), pH硼砂，pH值  30g
SRM 188  Potassium Hydrogen Tartrate, pH 酒石酸氢钾、pH  60g
SRM 189c  Potassium Tetroxalate Dihydrate pH Standard四草酸钾二水pH值的标准  65g
SRM 191d  pH Standards, (set of 191d-I + 191d-II)   1 bottle x25g;1bottlex30g
SRM 193  Potassium Nitrate硝酸钾  90g
SRM 194a  Ammonium Dihydrogen Phosphate 磷酸一铵 90g