HS-9AHeadspace sampling device injectorPreferred equipment

Overview of Headspace Sample Injector Installation
This sampler belongs toThe multi-mode headspace sampling device is a new type of gas chromatograph sample with multiple innovations and intellectual property rightsfrontProcessing equipment.
In the daily analysis process of gas chromatography, the largest 10% of the error comes from the instrument being operated, while 90% comes from the quality of sample pretreatment. The advantages and disadvantages of different sample pretreatment techniques and methods vary greatly. Among them, if headspace injection (gas phase extraction) gas chromatography analysis is used, it can achieve accurate, simple, and rapid analysis of volatile compounds in almost any sample. Because headspace sampling makes it extremely easy to achieve solvent-free extraction of liquid and solid samples, it can be said to fundamentally eliminate errors and problems that may occur in sample pretreatment methods such as adsorption desorption and solvent extraction.
Headspace sampling device injectoradvantage：

lAccurate, simple, fast, convenient, automatic, and environmentally friendly;

lHigh sensitivity analysis of volatile components in samples;

lDue to the fact that high boiling point components are not introduced into GC, analysis time can be shortened and work efficiency can be doubled;

lThe design of the sample constant temperature furnace station with circular distribution minimizes the temperature gradient at different heating positions and improves the stability of the analysis results;

• The sampling pump and injection valve are combined for negative pressure sampling, without the dilution effect of external added gas, with high sensitivity and precise quantification;
• The injection valve, quantitative loop, and sample transfer pipeline can control the temperature to avoid sample condensation during transmission;
  The sampling pipeline and injection valve are equipped with blowback function to prevent cross contamination;
• Single chip microcomputer control, LCD display temperature parameters, and thin film keyboard input;
• Overtemperature and power outage protection, safe to use;
• The injection needle can be freely replaced, making it convenient to connect various models of gas chromatographs at home and abroad;
  Synchronize the communication interface of the chromatographic data processing workstation to improve the reproducibility of retention time;

l
Application scope:

lPetrochemical industry: high polymer monomer coatings, volatile organic compounds, etc;

lSpice essence: flavor analysis of beer and tea;

lForensic Science: Testing of volatile toxins such as alcohols, aldehydes, and ketones in blood and urine

lTraffic Safety: Testing of Blood Alcohol Content for Vehicle Drivers Drinking and Drunk Driving

lBrewing industry: determination of low boiling point aroma components in beer

lFood industry: detection of residual 6 # solvent in extracted oil,Quality control and packaging materials for colored wine, vinegar, and soy sauce Residual acetaldehyde in the material and residual solvent # 6 in the leached oil;

lQuality inspection of drugs: organic residual solvents in drugs;

lEnvironmental protection: determination of volatile halogenated hydrocarbons in surface water and tap water such as rivers, lakes, etc., and volatile hydrocarbons in drinking waterHalogenated hydrocarbons

lHygiene and epidemic prevention:Detection of residual solvents in drugs,Analysis of residual disinfection and fumigation of medical supplies;

lMaterial control: detection of residual acetaldehyde in beverage bottles; Detection of organic volatile compounds such as benzene, toluene, and xylene in coatings and paints.

• Packaging printing: detection of residual organic solvents in flexible packaging bags

Characteristics and main functions of：

²instrumentMulti mode headspace sampling device: high-pressure headspace sampling device;

²Integrated design, compact structure, operationconvenient；

²The metal isothermal body heating temperature control headspace bottle has high temperature control accuracy, small gradient, good temperature performance, simple and reliable, reducing various drawbacks that may be caused by constant temperature heating in oil baths;

²Microcomputer control, LCD Chinese character display, membrane keyboard, numerical input, main functions include:

1.LCD can display: method parameters, real-time working status, running time, year, month, day, hour, etcIntroduction to the name;
2.Headspace bottle, injection system, and sampling (injection) catheter, three-way temperature controlConstant temperature system；
3.3An independentForeign affairs, 8-level time program control, self starting and self stopping operation;
4.It has 9 methods for editing, storing, and calling at any time, achieving fast startup and analysis;
5.The GC and chromatographic data processing workstations can be synchronously started, and the device can also be started using external event programs;
6.LCD brightness can be adjusted according to the usage scenario;

7.The display board and program control board circuit have self checking function and fault display;

²Equipped with an external carrier gas regulation system, headspace injection analysis can be performed without any modifications or changes to the GC instrument. If the original instrument carrier gas is used, the device can be regarded as an automatic sampling system module for use;

²A headspace sampling device can simultaneously supply several GC samples for analysis, greatly improving work efficiency;

²Automatically implement functions such as pressurization, sampling, injection, analysis, and post analysis blowback through foreign affairs time programming;

²The principle of high-pressure injection reduces the adverse effects of valve injection;

²The sampling and injection transfer tubes have automatic blowback function, which avoids cross infection of different samples;

²For active substance analysis, a 0.53mm elastic quartz tube can be selected as the sample transfer tube;

²Easy to achieve multiple repeated injections of the same sample bottle, facilitating the development and research of methods;

²The key components used for driving are imported pneumatic components;

²Equipped with a measuring device to assess the sealing performance of headspace bottles.
Headspace sampling deviceMain technical performance indicators：

Headspace sampling device：(High pressure, pressurization, injection)
The temperature control range of the sample area is from room temperature to 350 ℃, with an increment of 1 ℃. The heating power is set at approximately 400W;
The temperature control range of the valve injection system is from room temperature to 160 ℃, with an increment of 1 ℃. The heating power is set at approximately 60W;
The temperature control range of the sample transfer pipeline is from room temperature to 160 ℃, with an increment of 1 ℃. The heating power is approximately 40W;
Temperature control accuracy: ＜ ±0.5℃ ；
Temperature control gradient: ＜ ±0.5℃；
Headspace bottle workstation: nineposition；

Headspace bottle specifications: standard 20ml (10ml, 50ml, etc. can be customized);
Repeatability: RSD<3% (related to GC performance);
Injection pressure range: 0-0.4Mpa (continuously adjustable);
Backblowing cleaning flow rate: 0-20ml/min (continuously adjustable);
Effective size of the instrument: 180×360×400mm3；
The weight of the instrument is approximately 12 kg.

®Shanghai Xuansheng Science