I am trying to upend 15 years of the company I work for using only test strips for water testing. To do it successfully, I need to bring numbers.
I already know that our test strips (AquaCheck Yellows) cost us $10 per bottle, 50 test strips. These will last an average of 40 tests, accounting for the occasional re-test (when they look wacky) and dropped strip. This works out to around 25 cents per test and takes about 60 seconds per pool, including getting/walking/dipping/waiting/reading/recording. These strips test FC, Alk, pH, CYA. CH needs not be checked every day (nor CYA, but whatever), and we've gotten away with not checking TC every day, as the maintenance program rarely leaves a TC reading (over the last 8 months, doing a full-blown water test every 2 weeks, I've only ever had one CC reading, at 0.5 in a hot tub).
I know that I can get a Taylor K-2005 for $120 (CAD). There is also a K-2006 for $155.
What I need to know is, how long will the reagents last before needing to be refilled? I suspect the Alkalinity test will be the first to go, being 8-15 drops at each test, assuming all the drop sizes and bottle sizes are the same. But I need more information... can anyone fill me in?