1. Product introduction

PTC-III solid/liquid purge and trap instrument is a 70-position solid-liquid integrated automatic purge and trap instrument with electronic cold trap. The liquid sample can be automatically and accurately sampled into the purge bottle for purging and trapping, or the solid sample can be automatically added to distilled water and shaken and mixed directly for purging and trapping. Combined with GC or GC/MS, it can be widely used in environmental analysis, such as the analysis of organic pollutants in drinking water, waste water, soil, and the analysis of volatiles (such as odor components) in food. This instrument conforms to "HJ639-2012 Determination of Volatile Organic Compounds in Water Quality by Purge and Trap/Gas Chromatography-Mass Spectrometry", "HJ686-2014 Determination of Volatile Organic Compounds in Water Quality by Purge and Trap/Gas Chromatography-Mass Spectrometry", "HJ605 -2011 Determination of Volatile Organic Compounds in Soil and Sediments by Purge and Trap/Gas Chromatography-Mass Spectrometry and other standards.

2. Product parameters

1. Sample position: 70 positions, 40mlVOA sample bottle

2. Purge tube temperature: room temperature to 100°C, control accuracy ±1°C

3. Cold trap (electronic semiconductor refrigeration) temperature: the lowest refrigeration temperature can reach minus 30 degrees

4. Desorption temperature of capture tube: 150～380℃, heating rate >2400℃/min; from 250℃ to 35℃ within 90 seconds

5. Pipeline heating temperature: 50～220℃, control accuracy ±1℃

6. Heating temperature of water eliminator: room temperature～400℃

7. Cleaning distilled water temperature: room temperature～90℃, control accuracy ±1℃

8. Solid sample bottle heating: room temperature ~ 100 ℃, control accuracy ± 1 ℃

9. Solid sample mixing: 5ml distilled water, shake and mix

10. Glass purge tube: 5ml purge tube

11. Trap size: stainless steel Φ3mm×180mm×0.1mm

12. Purge flow: 10～150ml/min

13. Power: <800VA

14. Timing range: 1 second to 99 minutes and 59 seconds

15. Timing error: <0.1%

16. Gas pressure resistance: >0.4MPa

17. Synchronous signal output: two-way 1-2 second switching value

18. Dimensions of the instrument: height*width*length 620mm*840mm*450mm

19. Weight: about 40Kg

Working conditions:

1. Power supply: 220VAC±22VAC 50Hz±0.5Hz

2. Backflushing carrier gas pressure: ≤0.4MPa

3. Ambient temperature: 5～35℃

4. Relative humidity: ≤85%

3. Product Features

1. Strong general performance: can be combined with any brand of gas chromatograph (GC) and (GC-MS);

2. Simple operation, easy to use, whole process software control, high degree of automation: just put the sample tube into the sample tray, all operations and control are completed by the control software, so the sample repeatability is good; the main body is designed with a large touch LCD panel , which can track the temperature and operation commands in the whole process.

3. The cold trap adopts semiconductor refrigeration + air cooling, and the minimum refrigeration temperature can reach -30°C (at room temperature of 20°C), which meets most of the low-temperature enrichment needs.

4. The trap heating adopts direct resistance heating, and the heating rate is >2400℃/min.

5. The built-in foam sensor can detect the foam in the purge tube to prevent the way of contaminating the sample and protect the entire analysis system.

6. The user can customize the cleaning times of the sampling needle and the purge tube.

7. The solid sample bottle can be heated, and can be directly injected into distilled water to shake, mix and purge.

8. The trap and the purge tube are separated from the backflushing gas to reduce cross-contamination between samples. During a backflush cycle, compounds blown from the trap do not flow into the purge line.

9. The water removal trap removes water vapor at the purging end, greatly reducing the influence of water vapor on GC and GC/MS.

10. The sample pipeline is made of PEEK material and silanized inert treated stainless steel tube to reduce pollution residues.

11. The pipes and purge pipes can be flushed with hot water to reduce residues.

12. All pipelines and six-way valves are heated at controlled temperature to eliminate cold spots in the system and reduce sample loss.

13. Provide a synchronous interface, which can start the chromatography and workstation at the same time when injecting.