91干干-波多野结衣一区二区三区-国产二区三区-色哟哟入口国产精品-欧美日韩在线一区二区-欧美色综合网-国产成人综合在线-国产三级小视频-久久国产欧美-性综合网-色av影院-波多野结衣一二区-91精品免费观看-亚洲爱爱网站-丰满少妇被猛烈-亚洲三级中文字幕-欧美黄色激情视频-蜜臀av性久久久久蜜臀aⅴ四虎-被邻居侵犯深田えいみ-亚洲a一区-国产综合社区-日韩成人毛片视频-快播黄色小说-欧美国产成人精品一区二区三区-福利一二三区-亚洲图区在线-av专区在线

The working principle of full-automatic column chromatography is to control the forward or reverse movement of the motor through position feedback or pressure feedback to realize the automatic lifting of the column head; through the on-off of the valve and the pneumatic diaphragm pump to achieve the filling and recovery of the rubber. In addition, chromatography can be used with any chromatography system to achieve column chromatography separation and purification of drugs. The new type of chromatographic column products use workstation and chromatographic column to form a chromatographic column platform, which realizes automatic filling of packing, automatic recovery of packing, cleaning of column tube, rotating separation of column tube and dismantling of stainless steel screen.

The working principle of manual chromatography column is to use screw rod to drive the upper column head to raise and lower the column head; in addition, the driving lever acting on the inner cavity of the column head by a small rotating wheel can raise and lower the column head, which can make the sealing compression ring on the outer side of the column head to compress and loosen the sealing ring, so as to achieve the sealing and unsealing of the column head. The screw in and screw out of the upper column head can also be realized by the rotating screw of the upper flange of the column pipe. During the screw out, the packing can be directly added to the column pipe, and the upper screen can be cleaned and dried. When screwing in, the screw rod can be directly rotated to drive the upper column head. The working principle of manual chromatography column is to use screw rod to drive the upper cylinder head to raise and lower the cylinder head; in addition, the driving lever in the in

Specially developed for biological chromatography, one end of the adjustable piston can quickly open and fill the column through rapid thread rotation, and can also be easily disassembled for parts cleaning.