Question Where to get CO bump (test) gas for CO analyzer?

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Wants2divemore

Wants2divemore

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Does anyone know where to get a small amount of bump (test) gas for my CO analyzer? I have the OxyCheq Expedition analyzer.

The bump gas OxyCheq lists on their website has been sold out for quite a while and last I asked, they weren't sure when they were getting any back.
15 PPM CO Bump Test Calibration Gas

Through Google searches I can find large CO canisters for $200+ typically used for checking environmental CO alarms, but nothing small. I'm looking for something less than 100pp, since that's the upper limit of detection for the Expedition analyzer.

@DandyDon - I've read a lot of your posts about CO detectors. Do you calibrate yours and if so, what gas do you use?

Thanks
 
I bought the test gas from Nuvair when I bought their CO detector, along with lots of compressor parts, but for some reason their website is giving me a warning. "Firefox detected an issue and did not continue to nuvair.com."
 
I bought the test gas from Nuvair when I bought their CO detector, along with lots of compressor parts, but for some reason their website is giving me a warning. "Firefox detected an issue and did not continue to nuvair.com."
Google is blocking it too. You can message them on FB, but I am sure that they are working on the issue. Nuvair Compressors
 
https://www.shearwater.com/products/peregrine/

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