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https://www.amazon.com/gp/product/B00OZU455C/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
this one is one of the cheap ones people use
Just make sure that you read the analyzer specs first, most of them won't read below 35ppm which is way too high for diving. The filters should spit out 0ppm and sometimes you will get 1-5ppm depending on what's going on, but anything over whatever the ambient CO is should be considered contaminated
this one is one of the cheap ones people use
Just make sure that you read the analyzer specs first, most of them won't read below 35ppm which is way too high for diving. The filters should spit out 0ppm and sometimes you will get 1-5ppm depending on what's going on, but anything over whatever the ambient CO is should be considered contaminated