2. RELATIVE STANDARD DEVIATIONRSD-low:15% RSD-mid.:10% RSD-high:10%3. CHEMICAL REACTIONCarbon tetrachloride is decomposed and Phosgene is produced. By reacting with this Phosgene,4- (p-Nitrobenzyl)-phridine and Benzylaniline, dyestuff is produced....
参考价 面议 苯气体检测管118SB BENZENE 5-300ppm 参考价 面议 室内空气甲醛检测管No.713 FORMALDEHYDE 0.01-0 参考价 面议 氯乙烯CH2=CHCl气体测毒管132SC VINYL CHLORID 参考价 面议 氯乙烯CH2=CHCl气体检知管132SB VINYL CHLORID 参考价 面议产品分类品牌分类 日本光明北川式气体检测管 北川式气体检测管 ...