“I use it to calibrate my refractometer. They are very cheap and I dont trust the bottles of calibration fluid as the give false readings over time”
“Great product fast delivery will use again”
“All my test kits are Hanna although expensive they are the best kits”
“Really easy to do and quick to recalibrate A+++++”
“I'm sure it's absolutely fine but I bought it with the misguided belief it can be used on a refractometer, it can't.”
