MSA 10048280 Calibration Cylinder, Aluminium Gas Bottle, 34 Liter, 1.45% CH4, 15% O2, 60 PPM CO, 20 PPM H2S, Galaxy GX2 System Test Stand Compatible, Multi-Use Air Tank

Works great with galaxy system by MSA , reads bar code and auto setup reminds you when this tank is ready to expire

I figured a cal gas bottle should be straight forward. Apparently not! The bottle WILL NOT calibrate H2S on (3) brand new ALTAIR 4XR. O2, CO, and CH4 all calibrate without issue. Attempted through a MSA calibration station as well as the (3) monitors directly. Failed several times. Seller will not answer emails requesting refund or a replacement. I'd call their customer service terrible, if there was any.

Good product and good price.

Look at the picture and read the description; I ordered the MSA Calibration Gas Bottle pictured- with the test stand identification ring. There were reviews talking about how great the bottle and ring worked in their MSA test stands to autofill information from gas bottle into the test stand. What I received is what's in the photo I'm submitting- "IDEAL" gas, not the MSA with the test stand ID ring!

It is an excellent product