Peter_C
Contributor
Short term yes, long term not so much. Those little bottles that are good for 20 tests are not cheap either. So if you are performing a test minimum of bi-weekly you are going to go through a couple bottles a year. Build your own reg for the bigger bottle, and you come out way ahead.
FWIW you can buy the bump gas most anywhere or find calibration gas in bulk for reasonable prices from many places. Not everything needs to come from one supplier.
