Supplier of capillary gas chromatographRecording and Data Processing System
　　
1Supplier of capillary gas chromatographGas source and flow control
　　
There is not much difference between the components of this part and packed column chromatography, except that capillary gas chromatography requires a much smaller carrier gas flow rate than packed columns. If split injection is not used, the pre column pressure is lower, and the resin of the flow indicator component is also lower. The requirements for control and detection components are high, so early capillary chromatography often used split injection. Currently, most instruments use electronic pressure control systems.
　　
2. Capillary gas chromatograph supplier injection system
　　
There are significant differences between the injection system of capillary gas chromatography and packed column chromatography. In order to address the discrimination caused by capillary gas chromatography in split injection, various injection methods and equipment have been studied, such as split/non split injection systems; Maintain gap injection system; Program heating injection system.
　　
3. Capillary gas chromatograph supplier chromatography column system
　　
This system includes a chromatographic column box, column connectors, and chromatographic columns. There is no difference between column box and packed column chromatography. The column connector is connected to the injection system and is more complex than packed column chromatography.
　　
4. Capillary gas chromatograph supplier testing system
　　
Capillary gas chromatography can use various detectors, with the most commonly used being FID, and can also be matched with micro TCD, ECD, FPD, and TID. But to match with capillary gas chromatography, the dead volume of the detector should be as small as possible.
　　
5. Supplier Record and Data Processing System for Capillary Gas Chromatography (Chromatography Workstation)
　　
The peak time of capillary gas chromatography is short, sometimes less than 1 second, because the column efficiency of capillary gas chromatography is high, the peak shape is sharp, the region width is small, and the peak time is sometimes very fast, so the response of the recorder needs to be fast.
　　
Main features of capillary gas chromatograph supplier products
　　
1. SPB-1 non-polar column 2. SPB-5 weakly polar column
　　
(Bonding, polydimethylsiloxane) (Bonding, 5% phenyl, 95% methyl polysiloxane)
　　
Comparison brands: HP-1, DB-1, P-1, CP-SIL5CB, Ultra-1007-1, RTx-1, AT-1
　　
Similar fixed phase: SE-30, SP-2100, OV-1, OV-101
　　
Operating temperature: -60 ℃ -320 ℃
　　
Application scope: alkanes, aromatic hydrocarbons, polycyclic aromatic hydrocarbons, alcohols, phenols, ketones, esters, aldehydes, amines, halogenated hydrocarbons, pyridines, sugar derivatives, amino acid derivatives, vitamin derivatives, analgesics, pesticides, solvents, cholesterol, spices, coffee, food additives, etc. Comparison brands: HP-5, DB-5, BP-5, CP-SIL8CB, Ultra-2, RTx-5, AT-5
　　
Similar fixed phase: SE-54, SE-52, OV-73
　　
Operating temperature: -60 ℃ -320 ℃