Analysis and application analysis of common stationary phases in chromatographic columns

Analysis and application analysis of common stationary phases in chromatographic columns The stationary phase formed by organic functional groups covalently bonded to free hydroxyl groups on the surface of silica gel through chemical reaction is called chemically bonded phase. The outstanding feature of this type of stationary phase is resistance to solvent washing, and the selectivity of separation can be changed by changing the type of organic functional group in the bonded phase.

Automatic Vacuum Forming Machines


Usually for Thin plastic (0.2-1.5mm) forming,Vacuum forming, commonly known as vacuuforming, is a simplified version of thermoforming.


whereby a sheet of plastic is heated to a forming temperature, stretched onto or into a single-surface mold, and held against the mold by applying vacuum between the mold surface and the sheet.

Automatic Vacuum Forming Machine

Desktop Vacuum Forming Machine,Automatic Vacuum Forming Machine,Automatic Blister Forming Machine,Automatic Seed Tray Vacuum Forming Machine

Hangzhou Xiaoshan Wanfeng Mechanical & Electrical Equipment Factory , https://www.wanfengmachinery.com