丙酮氯仿

A Product main business categories: chemical solvents white oil, toluene, xylene, durene, valitin water, acetate, D resin, acetone, butanone, cyclohexanone , anti-white water, dichloromethane, trichloroethane, trichlorethylene, loose water-saving washing network water, open water, wash water, and days that water, rust agent, to water-logging, washing machine water, decontamination water, n-butyl alcohol, isopropyl alcohol, ethanol, industrial alcohol, car-washing water, washing machine water, clean lines of water, cleaning machine water, fire water, paint remover, fungicides, antifreeze water, chloroform, grinding fluid , diluent, release agent, dehydration agent substantial industrial solvents.

主要经营产品 A类：化工溶剂白电油、甲苯、二甲苯、四甲苯、凡立水、乙脂、丁脂、丙酮、丁酮、环己酮、防白水、二氯甲烷、三氯乙烷、三氯乙烯、松节水、洗网水、开油水、洗面水、天那水、除锈剂、去渍水、洗枪水、去污水、正丁醇、异丙醇、乙醇、工业酒精、洗车水、洗机水、抹线水、抹机水、火水、脱漆剂、杀菌剂、防冻水、哥罗仿、研磨液、稀释剂、脱模剂、脱水剂等大量工业溶剂。

According the known structure of MELs and the composition of broth, the separate and purify process of MELs was studied with silica-gel chromatography and the optimum conditions were: silica gel particle size 200 mesh, washing solution chloroform-acetone mixture (7: 3 for MEL-A, 6: 4 for MEL-B), washing rate 0.25ml/min, washing amount 400ml solvent/g MEL.

1根据已知生物表面活性剂MEL的结构特点和发酵液组成，在提取得到MEL粗制品的基础上，采用硅胶色谱分离技术，确定了MEL的最佳分离纯化条件：硅胶粒径200目，洗脱剂采用氯仿-丙酮混合溶剂，洗脱剂配比为7∶3、6∶4，洗脱速率为0.25ml/min，洗脱剂用量为400ml/gMEL。

An improved method that facilitates the extraction of PCR-compatible faecal DNA from giant panda\'s faeces is described. The method involves a novel preprocessing step in DNA extraction. The faeces is washed two or three times with precooled acetone, which removes numerous potential PCR inhibitors, and then digested with proteinase K. The DNA is purified with phenol/chloroform.

在粪便DNA的提取过程中采用一个新的预处理方法，将粪便用预冷的丙酮洗2～3次，除去粪便中含有的大量PCR抑制物，然后蛋白酶K裂解、酚-氯仿抽提，能提取到纯度很高的DNA供PCR扩增。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。