In order to save costs for more users and enable better performance of good equipment, Tengzhou Zhongkepu Analytical Instrument Co., Ltd. has long provided second-hand, idle and normally used laboratory instruments and equipment, as well as warranty services. The products provided by our company have been widely used in major pharmaceutical companies, research and development enterprises, chemical enterprises and other units, and can be purchased on site through on-site inspections; In addition, the company has been acquiring second-hand instruments for a long time

The existing products are as follows:

Analytical instruments: second-hand gas chromatograph, second-hand liquid chromatograph, second-hand ultraviolet spectrophotometer, second-hand atomic absorption spectrophotometer (domestic), second-hand gas chromatograph, price and quality

Conventional instruments: analytical balance, blast drying oven, incubator, muffle furnace, sterilization pot, centrifuge, vacuum pump (domestic)

Other categories: construction instruments, chemical equipment, petroleum equipment

Sincere customer letters are needed for negotiation, and we look forward to working with everyone!

Reminder: Please call or write to collect all types of laboratory instruments at the same time! king

Case: Characteristics of Shandong Ruihong SP-6890 Gas Chromatography System

Used SP-6890 gas chromatograph configuration

This instrument is equipped with a dual hydrogen flame detector and a capillary split injection system

Used SP-6890 gas chromatograph parameters

1. The machine has an internal gas cut-off protection function (automatic power-off and alarm), which provides maximum protection for chromatographic columns and TCD tungsten wires from damage;

2. Adopting a brand new humanized and dual CPU design, the temperature control accuracy is higher than ± 0.1 ℃, with excellent reliability and anti-interference ability, and has extreme temperature overload protection function;

3. LCD displays have adjustable backgrounds and other functions, providing richer and more intuitive display content The keyboard sets various operating parameters and has power-off protection function;

4. It has a wide range of fault self diagnosis function, which can help users easily determine the fault location;

5. It has a five stage program heating function The intelligent rear door opening system, coupled with more reasonable inlet and outlet air duct design, enables the cooling speed of the column chamber to be very fast (for example, at other room temperatures)

At 280 ℃, it takes 8 minutes for the column temperature to decrease from 280 ℃ to 50 ℃ and stabilize;

6. The basic configuration of this machine is a dual hydrogen flame detector, which can be equipped with a single FID amplifier or dual FID amplifier In addition, there is ample room for expansion, and TCD and FID can be optionally selected at any time

NPD, ECD detectors, as well as gas injectors, converters, etc. This host can install four types of detectors simultaneously and can be temperature controlled separately, achieving multi use of one machine;

7. It has six independent temperature control zones. Each vaporization chamber, detection chamber, and amplifier adopts modular design. Installation and replacement are very convenient;

The highly stable and sensitive microcurrent amplification technology significantly improves the detection limit of FID;

After selection, this machine can simultaneously install small caliber capillary tubes, large caliber capillary columns, and packed columns. Various chromatographic columns are easy and reliable to install, among which small caliber capillary columns are specially designed

The vaporization chamber has split/non split, diaphragm blowing, and tail blowing systems;

Technical parameters

● 1 Host

11 can be equipped with hydrogen flame detector, thermal conductivity detector, electron capture detector, and nitrogen phosphorus detector simultaneously;

1.2 The instrument has six temperature control points and can be controlled with five step range rise; The sampler and each detector can be independently temperature controlled;

1.3 The instrument is equipped with two injection ports, a vaporization device, and an independent capillary injection device;

1.4 The instrument has three independent gas paths, three independent circuit systems, and three signal output terminals;

● Column box

2.1 The column box has a large volume and can accommodate three chromatography columns simultaneously;

2.2 Temperature control by microcomputer, human-machine dialogue. Real time display of temperature at each point;

2.3 Column box temperature: room temperature ± 5~400 ℃ accuracy: ± 0.1 ℃;

2.4 Five stage program heating, with a constant temperature time of 0-999.0 minutes for each stage. Increment 0. 1min, temperature increment 0.1 ℃;

● Detector

3.1 Hydrogen Flame Detector (FTD)

3.1.1 Sensitivity: M ≤ 8 × 10-12 g/sec (benzene)

3.1.2 Linear range: 107

3.1.3 Baseline drift: ≤ l × 10-14A/30min

3.1.4 Noise: ≤ 5 × 10-14A

3.2 Electron Capture Detector (ECD)

3.2.1 Sensitivity M ≤ 1 × 10-13g/ml (r-666)

3.2.2 Base flow: Io ≥ l × 10-9A

3.2.3 Baseline drift: ≤ 0.02mv/30min

3.2.4 Noise: ≤ 0.01mv

3.2.5 Linear range:>104

3.2.6 Radioactive source: Ni63

3.3 Flame photometric detector (FPD)

3.3.1 Sensitivity: Mp ≤ 2 × 10-11g/sec (1605), Ms ≤ 5 × 10-11g/sec (thiophene)

3.3.2 Baseline drift: ≤ 3 × 10-13A/30min

3.3.3 Noise: ≤ 2 × 10-12A

3.4 Thermal conductivity detector (TCD)

3.4.1 Sensitivity: s ≥ 4000mv. ml/mg (benzene)

3.4.2 Baseline drift: ≤ 0.05mv/30min

3.4.3 Noise: ≤ 0.015mv

3.5 Nitrogen Phosphorus Detector (NPD)

3.5.1 Sensitivity: Measurement of nitrogen Mf ≤ 5 × 10-12g/s (azobenzene)

Phosphorus Mf ≤ 5 × 10-12g/s (malathion)

3.5.2 Baseline drift: ≤ 3 × 10-13A/30min

3.53 Noise: ≤ 2 × 10-12A

If you have any questions about price and quality, please obtain the latest instrument information.