I've gotten very used to home tests over the last few years, and with the support available here have had a "troublefree pool". After a liner change I have totally new fill water and have been doing a lot more testing than I've needed to do in the past, and i've used the local pool store for water testing once or twice since I get my 12.5% bleach there anyway. They now have an all electronic system where they inject just a few ml of water into this little plastic disc and all the numbers you want come out in less than a minute or so. The curious thing is that I tested my water at home just before bringing a sample to them, and my results were kind of close to the pool store, but they were not the same.
Which result should be taken as more accurate? My chemicals are pretty fresh, and have been consistent. The last time I used a pool store's test years ago they didn't have this electronic testing system, and it makes testing multiple parameters really easy.
Any opininons on the discrepancy I described, or which to trust more closely?
Thanks
(Ok, pool stores have an interest in telling me I have an imbalance to sell me some chemicals, but I don't fall for their tricknology, and their results aren't really far off of my home results anyway. I want to know if I can feel comfortable using their numbers to save some time occasionally)
Which result should be taken as more accurate? My chemicals are pretty fresh, and have been consistent. The last time I used a pool store's test years ago they didn't have this electronic testing system, and it makes testing multiple parameters really easy.
Any opininons on the discrepancy I described, or which to trust more closely?
Thanks
(Ok, pool stores have an interest in telling me I have an imbalance to sell me some chemicals, but I don't fall for their tricknology, and their results aren't really far off of my home results anyway. I want to know if I can feel comfortable using their numbers to save some time occasionally)