Certificates of Analysis [COA]

Where to find COA/SDS information for a Cylinder.

Locate the code: Find the QR code printed directly on the main Calgaz cylinder label.
Scan the code: Open your smartphone or tablet's camera app or any standard QR scanning tool and aim it at the code. No App needed.
Access documents: The code will immediately redirect you to a digital portal to view or download the specific Certificate of Analysis (COA) and Safety Data Sheet (SDS) for that exact gas batch.
No specialized apps, custom accounts, or login details are required to retrieve these files.

Certificates of Analysis no longer show the tested value, they show the nominal ordered value.

The new "Relative Tolerance" combines both Blend Tolerance and Analytical Accuracy. This change aims to harmonize our offerings and provide a tighter overall tolerance for our gas products. Moving forward, our CoAs will display the nominal value requested plus or minus the associated relative tolerance, which varies depending on the gas concentration.

Instead of having a separate blend and analytical tolerance, we have combined the two into one total "relative" tolerance. Depending on the target concentration, in most cases the new spec is tighter than the historical Certified Standard spec. (Ex. 50 ppm mixtures with a certified standard spec have a +/-10% blend and <= 2% analytical tolerance; our new spec has a total relative tolerance of +/-5%)

All our gases continue to undergo the same rigorous testing as before. However, we will no longer present the analytical value on our CoAs. This adjustment will also help maintain consistency when placing future orders.