How to detect the purity of high-purity helium gas? These methods can ensure that the high-purity helium gas you purchase meets the quality standards

Helium, high-purity helium

Buy high-purity helium and find Wuhan Yisi Tuopu Technology Co., Ltd. Click on the online inquiry or call our hotline at+86 189 8614 9031.

1. Require high-purity helium suppliers to provide relevant purity testing reports, especially the original high-purity helium testing reports. For legitimate high-purity helium enterprises, units that have been supplying high-purity helium for many years generally have no problem. The high-purity helium gas supplied by Wuhan Yisi Tuopu Technology Co., Ltd. is directly transported by high-purity helium tank trucks, and there is a high-purity helium gas testing report from the manufacturer of high-purity helium gas!

2. Buy high-purity helium gas from reputable companies. Domestic high-purity helium gas is imported from abroad, and the purity of the original high-purity helium gas can generally reach over 99.999%. The high-purity helium gas packaging technology is the most important factor affecting the purity of high-purity helium gas. Therefore, checking the packaging technology of the high-purity helium manufacturer (high-purity helium supplier) and the strength of the high-purity helium technology team is a guarantee. There is no need to worry about how to detect the purity of high-purity helium gas. There is no need to explore methods for detecting the purity of high-purity helium gas every day. For Zhongxin Ruiyuan, the source of high-purity helium gas comes from imported high-purity helium gas, with a team of 23 years of experience in high-purity helium gas packaging.

3. If you still have concerns, take the high-purity helium sample and seek third-party assistance for testing. It can be determined whether the basic content of high-purity helium exceeds the standard.

How to detect the purity of high-purity helium gas? The second method for detecting the purity of high-purity helium gas is simply some related high-purity helium gas purity detection instruments. I believe there will be instructions on how to detect the purity of high-purity helium gas.

How to detect the purity of high-purity helium gas? The following example is chromatographic analysis detection technology:

Use a laboratory chromatograph with a pre concentration system to detect helium purity. The other conditions of the stabilized power supply, measuring bridge and other instruments are the same as those of a regular chromatograph. The range of the recorder is 0-1mV, and the detector is a four arm tungsten wire thermal conductivity cell with an S value greater than 1000.

The methods for detecting helium purity are temperature dependent concentration technology and thermal conductivity chromatography. This method quantitatively adsorbs the measured component on an adsorption column at liquid nitrogen temperature, and then quantitatively desorbs at room temperature (water bath) to increase the thickness of the trace measured component in the sample in advance. After chromatographic column separation, use a thermal conductivity cell detector for detection.

How to detect the purity of high-purity helium gas? Measurement conditions:

a. Carrier gas: high-purity helium gas, meeting the requirements of this standard, with a flow rate of 40-60mL/min.

b. Concentration column: about 40-50 cm long, with an inner diameter of approximately 4mm, filled with 3-4g of 601 or TDX-01 carbon molecular sieve with a particle size of 0.25-0.40mm.

c. Chromatography column: approximately 3m in length, 4mm in inner diameter, containing 5A molecular sieve with a length of approximately 1m (particle size: 0.25 to 0.40mm for coconut shell activated carbon). After activation treatment, the separation degree (R) between the tested components of the column should be greater than 1.

d. Adsorption temperature: -196oC (liquid nitrogen temperature). Desorption temperature: room temperature (water bath).

Buy high-purity helium and find Wuhan Yisi Tuopu Technology Co., Ltd. Click on the online inquiry or call our hotline at+86 189 8614 9031