化学试剂是搞化学的人经常用到的，了解其常用缩写也是应该的。AR (Analytical reagent 分析纯)； BC(Biochemical 生化试剂)；BP (British Pharmacopoeia 英国药典)；BR (Biological reagent 生物试剂)；BS (Biological Stain 生物染色剂)；CP (Chemical pure 化学纯)；EP (Extra Pure 特纯)； FCM (For Complexometry 络合滴定用)；FCP (For chromatography purpose 层析用)；FMP (For microscopic purpose 显微镜用)；FS (For synthesis 合成用)；GC (Gas chromatography 气相色谱)；GR (Guaranteed reagent 优级纯)；HPLC (High Preussuer Liquid chromatography 高压液相色谱)；Ind (Indicator 指示剂)；LR (Laboratory reagent 实验试剂)；OSA (Organic analyfical standard 有机分析标准)；PA (Pro analysis 分析用)；Pract (Practical use 实习用)；PT (Primary eragent 基准试剂)；Pur (Pure purum 纯)； Puriss (Purissmum 特纯)；SP (Spectrum pure 光谱纯)；Tech (Techincal grade 工业用)； TLC (Thin Layer chromatography 薄层色谱)；UV (Ultra violet pure 分光纯、光学纯、紫析分光光度纯）

请问AR纯度是多少？是分析纯吗？本人实验小白，见笑了