Apera InstrumentsTDS20 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.

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

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

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.

I ordered this TDS Pocket Tester because I was so impressed with the Apera PH meter.They seems to be high quality and built with lasting materials. It not your ordinary cheap light weight plastic PH meter. It is a little pricey, but this one will last! You will also get awesome Accuracy: ±1% F.S.Calibration is easy and exactly the same as you would do for the PH meter. In fact, both PH and TDS calibration is on the same page, same buttons and all. This make it very easy to remember how to calibrate without different manuals.I really like / appreciate the case, calibration and 2 calibration solutions are stored in a really nice strong case. Keeping everything together and ready to use is Key!!I have just started using the TDS meter and getting use to liquid nutrients. This is the reason I purchased the meter. From what I see so far it it a great TDS meter.I have nothing to compare to but just the impressive quality tells me I should be good with with one!

Compared to the cheaper ones it's actually pretty great.Support from Apera Instruments is also great.

Mesure simple et rapide, contrôle et étalonnage aisé sans devoir jouer du tournevis grâce a la reconnaissance digitale et les solutions d'étalonnage livrées dans le coffret.

No vienen instrucciones en español

TSDメーターを2本持っていますが、測定結果の差にひらきがあり過ぎるので、この商品を購入しました。購入するに当たっては、pHメーター（PH-20）を持っていて精度も良かったのと、自分で校正出来る点を考慮して決めました。購入したばかりなので耐久性は分かりませんが、測定結果は満足いくものでした。校正の手順も、クイックマニュアルに図解で説明があり分かりやすかったです。