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

[Wants2divemore]

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

 

[rhwestfall]

Calibration Gas | Calibration Gas Supplier | Cal Gas Direct Incorporated

Cal Gas Direct Incorporated is the leading Calibration Gas Supplier with the largest Selection in the USA. Providing high quality GASCO Calibration Gases all Made in the USA.

www.calgasdirect.com

 

[tursiops]

Grainger

 

[DandyDon]

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

No, that always seemed too much for me. I've always paid manufacturers to do it.

This place and others claims to have 100 ppm Calgas in 17 L and 34 L for about the same price so I'd go with the larger tank unless there is something I am missing. https://www.grainger.com/category/s...?attrs=Gas+Name|Carbon+Monoxide&filters=attrs

 

[macado]

https://www.grainger.com/product/23YK46?RIID=55238708315&GID=&mid=OrderConfirmation&rfe=ebccd73fa11e2bbf22a108bd0cceb6a87edbe4e715e07668c80a39357d399f69&gucid=EMT:10339122:Item:CSM-323&emcid=NA:Item

If you have a Grainer location near by you can avoid paying for shipping and just do local pickup

This is what I am using 15ppm CO calibration gas

 

[Peter_C]

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."

 

[DandyDon]

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