亚洲天堂影院-一区二区不卡视频-九九热视频在线-日日摸日日添日日躁av-人妻洗澡被强公日日澡-贝利弗山的秘密1985版免费观看-娇小萝被两个黑人用半米长-国产v在线-国产视频手机在线观看-亚洲精品69-一本到免费视频-亚洲自拍色-亚洲精品无码久久久久久久-成人免费毛片w下载-www.国产一区二区-密桃成人av-黄色视屏在线-国产午夜网站-av免播放器-欧美日韩中出-亚洲国产情侣-精品久热-免费久久精品视频-人成亚洲-久久精品国产露脸对白-男同互插视频-自拍视频二区-久久99视频免费观看-成人国产精品免费观看视频-色男av

product description:

JXDC-20 nitrogen purging instrument adopts microcomputer and PID fuzzy control technology, and uses high-purity aluminum material as the heat transfer medium to replace the traditional water bath device. It has the characteristics of convenient use, large temperature control range, and high precision. Its working principle is to blow nitrogen or air to the surface of the heated sample quickly, continuously and controllably, and set the heating temperature according to the evaporation speed and boiling point of the concentrated solvent to achieve rapid concentration of a large number of samples.

Features:

◆ The blowpipes are independent of each other and will not cause cross-contamination;

◆ Each air needle channel can be used in combination or alone;

◆ The system has high temperature control accuracy, wide temperature control range, temperature numerical control display, and temperature calibration is convenient;

◆ The product has beautiful appearance, simple operation, safe and reliable use;

Product parameters:

Optional accessories: