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Focus Technology (Hangzhou) Co., Ltd
Home>Products>Pre 4000 Atmospheric Pre Concentrator (Sterling)
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    No. 760 Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province
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Pre 4000 Atmospheric Pre Concentrator (Sterling)
The Pre 4000 atmospheric pre concentrator adopts a three-stage cold trap design, combined with innovative Stirling refrigeration technology, which doe
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Product Overview
The Pre 4000 atmospheric pre concentrator adopts a three-stage cold trap design, combined with innovative Stirling refrigeration technology, which does not require the consumption of liquid nitrogen or liquid CO2. It is easy to operate, stable and reliable, and can perfectly replace liquid nitrogen refrigeration, providing a new solution for detecting trace multi-component VOCs.
Product Features

Stirling refrigeration technology

No need to consume liquid nitrogen, no pressure relief noise from the Duwa tank, and no safety hazards of nitrogen suffocation.

The maximum low temperature of the refrigeration machine can reach -200 ℃, achieving the effect of liquid nitrogen refrigeration.

Excellent CO2&H2O Management Technology

The first stage cold trap is used for low-temperature water removal without losing VOCs, while the second stage cold trap has a special packing material that effectively removes CO while capturing VOCs2、O2、N2.

Accurate sampling technology

The combination of high-precision quality flowmeter and diaphragm pump has the advantages of large sampling volume, unaffected by environmental temperature, and more accurate injection.

Three level technology with multiple measures

The three-stage cold trap is designed as a capillary tube, using low temperature to achieve efficient focusing. During desorption, it does not split the pulse injection, achieving low spectral band broadening and high sensitivity.

Automated system leak detection

The atmospheric pre concentrator can detect leaks in the system by pressurization or vacuum, ensuring the airtightness of the system. The entire process is automated and the system displays the leak detection results.

Flexible internal standard injection

Internal standard injection can collect low concentration internal standard gas or high concentration internal standard gas using a quantitative ring, eliminating the tedious operation of diluting the internal standard gas. The injection accuracy is ≤ 2%.

Application field
Environmental monitoring, emergency monitoring, occupational health, food processing, public health, scientific research
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