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Manufacturing calibration gases for gas detection
& safety since 1992.

Fill in a Form For Returns:

Safety Data Sheets:

Cylinder/Regulator Reference Sheet:

Calibration Gas Mixes:

Due to ongoing violations of our cylinder return policy, all returns must now receive prior approval before being processed.


If you need to return empty “refillable” cylinders that were purchased from ISG, please contact our customer service team at orders@isgases.com with your return details to request approval.


ISG does not accept returns of disposable cylinders or cylinders from another manufacturer.

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