Gastec P-4 Permeation Tube Hydrogen Sulphide

GASTEC P-4 Permeation Tube Hydrogen Sulphide

Although technology is always evolving, one demand for our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further. GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.

Generating calibration gas with a permeation tube.

Concentration range 0.1 – 13.6 ppm.
*As Permeation tubes have individual differences in permeation rates, the above concentration ranges may differ slightly from the actual range that can be controlled.

Features of Gastec P-4 Permeation Tube Hydrogen Sulphide

Exceptional Stability: Provides a constant, predictable diffusion rate of $H_{2}S$ over an extended period.
Traceable Standards: Offers a reliable method for creating primary or secondary gas standards for laboratory and field use.
High-Purity Generation: Unlike gas cylinders, which can suffer from adsorption or reaction with the cylinder walls, permeation tubes deliver a high-purity gas stream.
Compact & Safe: Eliminates the need for large, high-pressure tanks of toxic gas by storing a small amount of liquefied $H_{2}S$ in a sealed, permeable membrane.

Specifications of Gastec P-4 Permeation Tube Hydrogen Sulphide

Property	Details
Chemical Name	Hydrogen Sulphide
Chemical Formula	$H_{2}S$
Model Number	P-4
Permeation Rate	Temperature dependent (standardized at 35°C or 40°C)
Typical Concentration	ppb (parts per billion) to low ppm (parts per million)
Accuracy	$\pm 3\%$ to $\pm 5\%$ (when used with calibrated flow controllers)
Service Life	Typically 6 to 12 months depending on usage and storage
Tube Material	Fluororesin / FEP (Fluorinated Ethylene Propylene)