I bought the CA20F about a week ago used it several times already. Works great and no complaints so far. Glad I spent a little extra on this model because it's definitely worth the few extra bucks to ..
Works really well. We had a bactrack before this unit and the readings would jump around. One test would be .11 then .15 then .12. We lost faith in that model. With the ca20f, each reading is never up..
My office has been using the CA20F now for 6 months and testing with the CA20F is as easy as it gets. The last device we used made us wait a minute in between each test. It's such a relief to be able ..