If you've ever watched a pool technician pull out a small device, grab a water sample from your pool, and produce a detailed report minutes later — you've seen a digital water test in action. But what is it actually measuring? And why does it matter more than the old-school test strips you can grab from the hardware store? At Crystal Clear Pool Care, we use the LaMotte Spin Touch  digital water analyser on every single service visit. Here's what it tests, what the results mea