Sidersteel Trading Co., Ltd.
Main products:Steel,Cylinder,Tank,Gas,Vaporizer
Products
Contact Us
  • Contact Person : Mr. DING MICHAEL
  • Company Name : Sidersteel Trading Co., Ltd.
  • Tel : 86-21-68865639
  • Fax : 86-21-68865636
  • Address : Shanghai,SHANGHAI,No.49 Luofen Road, 555Nong, Bao Shan District, Shanghai
  • Country/Region : China
  • Zip : 200120

Helium/He/High Purity Helium

Helium/He/High Purity Helium
Product Detailed
Helium/He CAS:7440-59-7 Purity: 99.999% Molecular Weight: 4.00 Loading: 200bar/50L Cylinder

Helium/HeCAS:7440-59-7Purity: 99.999%Molecular Weight: 4.00Loading: 200bar/50L Cylinder

                    HELIUM SPECIFICATION FROM ST GAS 

Standard 

Purity 

High Purity

Purity: 

> 99.99% 

> 99.999% 

> 99.9995%

Impurity: 

Ne

< 40   vol.ppm

<4  vol.ppm

<1  vol.ppm

H2

<7  vol.ppm

<1  vol.ppm

<0.1  vol.ppm

O2

<5  vol.ppm

<1  vol.ppm

<0.5  vol.ppm

N2

<25  vol.ppm

<2  vol.ppm

<1  vol.ppm

CO

<1  vol.ppm

<0.5  vol.ppm

<0.1  vol.ppm

CO2

<1  vol.ppm

<0.5  vol.ppm

<0.2  vol.ppm

CH4

<1  vol.ppm

<0.5  vol.ppm

<0.1  vol.ppm

H2O

<20  vol.ppm

<3  vol.ppm

<1  vol.ppm

Helium/He/High Purity Helium



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