Apera Instruments TDS20 Value TDS Meter, Pocket Tester, Waterproof, ±1% Accuracy, ±0.5˚C Temperature Sensor, Complete Kit

As title

A very well made and accurate TDS meter, i have both this and their PH meter in this range.Ignore every other chinese PoS meter on this site and just pay a little more and get a good accurate German meter.

Brilliant, peace of mind on calibration results too. Very much recommended from me.

Just to be clear straight from the off. This is a review of the Apera Instruments AI213 TDS meter. That's total dissolved solids. It does also show water temperature but this is NOT a pH meter, nor is it an EC meter (electrical conductivity - technically a TDS meter uses EC measurement to give a TDS result). For most applications you're probably going to want at least a separate pH meter.This comes in a well presented kit form, which includes the two calibration fluids required to calibrate the tester. Roughly speaking you're looking at a case about the size of an old Betamax tape but an inch and a half thick. Probably not the most useful size comparison, so 160x190mm.Instructions are included to set-up the meter, which requires several steps and both calibration solutions but it's actually pretty straight forward.There's a big difference between the total dissolved solids for hydroponics vs checking your pool water but there are several different ranges to accommodate this. Also, I don't have a pool so that solved that dilemma.I've been using a cheap TDS meter for my hydroponic solutions up til now and honestly I gave up on it as the results just didn't feel accurate and repeatable from one test to the next. I'm feeling a LOT more confident in the consistency of the results. On the other hand it's about five times the price of those other meters.

POCKET========The Apera Instruments TDS20 tester is an effective pocket tester.I tested:tap water : 150 ppmfiltered water : 120 ppmbottled water: 0.8 ppmUSE====It can be used for setting up hydroponics.WORKS=======So far it works. If I have any issues I'll update the review

When I received the product it was quite easy to use, measurements seemed accurate to my inline professional meter. After 4 weeks blank screen of death, batteries supplied by the manufacturer had leaked and damaged the internals, no joy after replacing batteries. Will update once I can get hold of customer service

Purchased 2 of this both of them stopped working in less than 3 months can’t even return

Seems to work well and produce consistent readings. Well made and in a good box with calibration solutions. Good clear instructions and laminated guide.