无水亚硒酸;氧化硒;亚硒酸酐;硒合剂;氧化硒(>98%,PRACT GRADE);硒原子光谱分析标准浓缩液 1.00G SE;亚硒酸 溶液;亚硒酐,无水亚硒酸;亚硒酐; Selenious acid anhydride;SELENIOUS ANHYDRIDE;SELENIUM AA/ICP CALIBRATION/CHECK STANDARD;SELENIUM AA SINGLE ELEMENT STANDARD;SELENIUM, AAS STANDARD SOLUTION;SELENIUM AA STANDARD;SELENIUM ATOMIC ABSORPTION SINGLE ELEMENT STANDARD;SELENIUM ATOMIC ABSORPTION STANDARD
碳酸酐;固态二氧化碳;二氧化碳-12C;二氧化碳 (99.8%);高纯二氧化碳;二氧化碳(固体);二氧化碳(液体);二氧化碳[压缩的或液化的]; Carbon dioxide-free water;Standard solution for the determination of carbon dioxide;carbon/carbondioxide;carbondioxide(co2);carbondioxide(non-specificname);carbondioxide,refrigeratedliquid;carbondioxide,solid;carbondioxidegas
硅胶薄层层析;LUDOX AS-30 胶态氧化硅;硅胶G/纳米二氧化硅/亲油气相二氧化硅;硅胶, 用于色谱, 0.060 - 0.2 MM (70 - 230 目), 60 A;石英砂,60-80目;亲水型气相纳米二氧化硅HYDROPHILIC-200型;硅胶G/纳米二氧化硅;无定形二氧化硅; SILICA GEL 60 PF254 FOR PREPARATIVE LAYE;LICHROSORB SI 100 (10 MYM) 10 G;TLC-SILICA GEL 60 GF254 MEAN PARTICLE SI;LICHROSORB SI 100 (10 MYM) 100 G;SEA SAND EXTRA PURE 5 KG;SILICA GEL 60 GF254 FOR THIN-LAYER CHROM;SILICA GEL 60 PF254 + 366 FOR PREPARATIV;SEA SAND EXTRA PURE 25 KG
铬酸洗液;铬硫酸; Sulfuric acid, mixt. with chromic acid (H2Cr2O7) potassium salt (1:2);CHROMOSULFURIC ACID 2 % CRO3;CHROMOSULFURIC ACID, FOR CLEANING OF GLA SS VESSELS;Chromschwefelsure