PERMEATION TUBES

Product Details :

• The purpose of a gas standard is to establish accurate reference points for the verification of an analysis.
• Static mixtures in gas cylinders are often unreliable and inaccurate at the levels (ppm to ppb) that analytical technology now demands.
• In gas cylinders containing low level mixtures, the trace components often adsorb on to, or react with, the cylinder walls causing the standard to be inaccurate and unreliable.
• Also, it may be impossible to get a matrix gas that is completely free of the trace component, thus making it impossible to get a true reference point with a cylinder mixture. These problems are solved by using permeation tubes in lieu of gas cylinders.