AquaChek 561140A Salt Water Swimming Pool Test Strips - White

I use this product a lot and to buy it is an hour and a half away.

My salt system kept indicating low salt. We had some rain and had to drain the pool a bit, then some drought and had to fill with the hose, so it was expected to need to top off the salt. I calculated the amount I needed based on the control box's salt reading and added it, only to find that it barely went up. I got suspicious as I know a failing T-Cell will often read low salt due to the plates failing and not pulling current, which is how the system calculates salt levels (It doesn't really check salt, it just compares the amperage pulled at the current temperature and salt level and calculates it).My salt strips were 4 years old and no longer worked so I ordered a fresh batch and found my pool to be at 3700 PPM, which is at the upper end of normal. That confirmed my T-cell is no longer calculating current. Some say you can clean it in diluted muriatic acid to clean the plates and restore it, but mine is a generic cell and is 4 years old which is about the lifespan of these in Florida where it runs 365 days a year. I fell for it once and didn't double check the salt level and ended up having way too much in the pool when I finally figured out the cell failed, so I had to drain a bunch of water and then refill to dilute it back down to a safe level for the new cell. I wasted several bags of salt and hundreds or maybe thousands of gallons of water, so having test strips to verify the levels is a must. Hope this saves others from my mistakes:-)

Produit conforme et assez fiable en taux de sel, pour ma piscine.

todo correcto

Preso per valutare la salinità dell’acqua della piscina che utilizza clorinatore. Funzionano bene e sono affidabili.