Calibration Gases and Carrier Gases for Biomethane Sites

Gas mixture types	Used for	Standard delivery time
Type 4 hydrocarbon mixtures	calibrating the GC for network entry requirements	2-3 weeks from receipt of order
biomethane calibration gases	calibrating the instrument for network entry and safety requirements	4-5 weeks from receipt of order

Stock Gases

EffecTech also holds stock of the following gases:

• 35-day test gases
• carrier gases
• nitrogen
• helium