3. Technical requirements

*3.1 Liquid chromatography system, including mobile phase bottle, quaternary gradient pump (with built-in 4-channel degassing system), multi column column temperature box, VWD detector.

*3.2 The flow path must adopt the German original UHPLC dedicated Viper connection system, with gold-plated interface technology, high voltage resistance, and wear resistance. Hand rotated disassembly, zero dead volume.

3.3 Four element pump

*3.3.1 Flow range: 0.001~10.000 mL/min, step 0.001 mL/min

*3.3.2 Maximum pressure: 62Mpa

*3.3.3 Traffic accuracy:<0.1%

3.3.4 Flow precision:<0.05%

3.3.5 Gradient mixing accuracy:<0.15%

3.3.6 Types of solvents: 4 types

*3.3.7 Pump cleaning system: active separate flow path cleaning plunger

*3.3.8 Droplet counter: automatically monitors pump leakage and pump cleaning fluid situation

3.4 Automatic sampler:

3.4.1 Compatible with orifice plates and conventional sample bottles

3.4.2 Injection method: No sample loss, no residue

3.4.3 Injection volume: 0.01~100 μ L

3.4.4 Injection volume accuracy: 0.5%

*3.4.5 Cross contamination: 0.004%

3.4.6 Automatic anti settling shaking and lateral displacement function

3.4.7 Online dilution and online derivative functions

3.5 Column Temperature Chamber

3.5.1 Safety performance: It has the function of preventing accidental door opening, built-in temperature, humidity, and gas sensors, and online monitoring of leakage.

3.5.2 Temperature control range: 5~80 ℃

3.5.3 Temperature accuracy: ± 0.5 ℃

*3.5.4 Temperature stability ± 0.1 ℃

3.5.5 Temperature accuracy ± 0.1 ℃

*3.5.6 Capacity: Up to 12 chromatography columns

*3.5.7 Reserve additional positions for six or ten way valves, which can be used for applications such as online sample pretreatment

3.6 UV detector:VWD-3100

3.6.1Frequency bandwidth：6 nm at 254 nm

3.6.2Wavelength range:190-900 nm

3.6.3Wavelength accuracy: ±0.1 nm

3.6.4Lamp: Deuterium lamp, tungsten lamp (optional), both with temperature monitoring function, automatically identifying all information including serial number

*3.6.5Data collection frequency:100HZ

*3.6.6Automatic calibration:D-alphaLine method self correction, verification of holmium oxide filter

3.6.7The circulation pool has automatic temperature regulation function

3.7 Software:

*3.7.1 Operating System: Compatible with Windows XP and Windows Vista

3.7.2 Chromatographic Control Analysis Database: Through high-performance USB and computer digital signal transmission, analysis methods and sequences can be programmed, compatible with multiple database platforms such as Microsoft Access, Oracle, and Microsoft SQL Server.

3.7.3 Can automatically perform fast data collection and post-processing

3.7.4 Can provide timely analysis of condition parameters and analysis results, online monitoring and collection of pump pressure change data.

3.7.5 It has the function of tracing instrument related data and operating conditions, which facilitates troubleshooting.

3.7.6 Can be upgraded to be compatible with third-party instruments, including gas chromatography, ion chromatography, and other third-party instrument companies

3.7.7 Experimental results can be output in formats such as PDF and EXCEL. The relevant operations for editing experimental data are in EXCEL format, with flexible calculations and easy modification.

3.8 Computer and Printer Systems

CPU: I7 or above, hard drive 1000GB, 20 inch widescreen LCD display

HP1080 printer/black and white laser printer