All Gas Cylinders require Pressure Regulators to reduce cylinder pressure to line pressure. 

AGC Instruments recommends two Stage regulators which are available as the High Purity type for TCD and FID applications and Ultra High Purity type for DID and HFADD applications.

High Purity Regulators
For chromatography applications.  This regulator type features 316 stainless steel diaphragms with captive Teflon gaskets and brass bar (nickel-plated) stock bodies, and are sealed to a helium leak rate of less than 2 x 10^-5 cc/second.

Specifications:

Body:                        Nickel-Plated brass or brass

Diaphragm:                316 stainless steel

Diaphragm Seal:          captive Teflon gasket

Max Inlet Pressure:      Two Stage:  3000 psig / 204 bar

Delivery Pressure:        0-100 psig / 0-7 bar

Connection:               To BS, CGA, DIN or other specifications available

Ultra High Purity Regulator

For high sensitivity chromatography such as applications using the Discharge Ionisation Detector (DID) and High Frequency Argon Discharge Detector (HFADD).  This regulator type features 316 stainless steel diaphragms with metal to metal seals and brass bar (nickel-plated) stock bodies, and are sealed to a helium leak rate of less than 2 x 10^-8 cc/second.

Specifications:

Body:                    Nickel-Plated brass or brass
Diaphragm:             316 stainless steel
Diaphragm Seal:      metal to metal
Max Inlet Pressure:  Two Stage:  3000 psig / 204 bar
Delivery Pressure:    0-100 psig / 0-7 bar
Connection:           To BS, CGA, DIN or other specifications available

The High Purity and Ultra High Purity regulators are ultrasonically cleaned to remove contaminants, and their internal parts are protected by 20µm sintered bronze filters.