Jellas Digital PH Meter Water Tester Jellas is aimed to provide high quality pH meter which is affordable and useful for those who need a pH tester for household and laboratory use, it's not only ideal for household or laboratory use, but also suitable for testing pH balance of drinking water, pool, aquarium, food Project, RO system, Spa, or hydroponics. Auto Temperature Compensation Jellas pH Pocket Size pH Meter is designed to feature the Automatic Temperature Compensation which will automatically compensate the solution temperature of 0-50℃(32～122℉), provide you the most accurate and stable reading. Easy to Use Just remove the protective cap and immerse the PH meter electrode in the solution and turn on the PH by "ON/OFF" switch to be measured. Beats the heck out of trying to see the colors of a pH test strip. Easy to Calibrate You can simply follow the instruction on the provided packet of solution 4.01 or 6.86, immerse the PH tester in the solution and adjust with the provided screwdriver to dial it in. Specifications:  ● Measuring Range: 0-14 pH ● Resolution: 0.01 pH  ● LCD Display: Green Backlit ● Accuracy: ±0.01 pH（20°C )  ●ATC Function: 0-50℃(32～122℉)  ● Use Environment: RH 95%, 0-50℃（32～122℉ ) ● Adjustment: trimmer potentiometer  ● Battery:  4×1.5V LR44  ● Product Size: 5.9x1.18x0.79 inches ● Weight: 1.70 OZ  Warning Tips:  Be careful with the glass probe since it may be a little fragile when you use.  Remember to gently wipe it with a clean, soft cloth when you're done before capping it again.  
G**R
PH meter that shines in the dark
Arrived quickly and well boxed,that's were the satisfaction stops,wasn't set up,followed instructions,and it's consistently giving incorrect readings. Digital readings won't settle & read correctly,on this evidence,i could not recommend other would be buyers suppose you get what you pay for,had similar in the past and worked perfectly,even came set up and readings correct,. Pot luck ???
D**O
PH Meter
Very useful if you have a hot tub or pool. It's accurate, I tested with stirp and the result is same and you don't need to spend always money for a strips. I recommend it.
M**E
Very recomended
Very accurate, works a treat. Deffinatley worth the money. Used for my marine fish tank and compared to other methods of testing for PH, it was very accurate. Would deffinatley recommend
K**E
Fair product
Can't work out how to use it read the instructions a few times and still don't understand it gone back to the dip strips much easier even though is pricey.Good product if you get the hang of it I think.Well made just difficult to use for me.
F**P
Maybe good for professionals, but,...
If you just started with hydroponics and buying stuff, just get single use test papers. They don’t need to calibrate, you won’t have to buy specific acid and base, at the end it’s much more stuff to buy, more complicated, takes more space. It measures great and accurate, so if you need 2 decimals and measure every day, go for it and change the score to 5 stars.
C**M
Broke.
Unfortunately this was broken and I didn’t realise this until we had some maintenance done on our hot tub, will stick to the testing strips, much more reliable.
P**L
Nowhere on the description says you need distilled water to calibrate the thing.
Can’t use till get some distilled water for calibration.
D**D
Cheap but slow settling to a figure
East to use but takes a long time to settle. So if your not someone who wants to wait 3 to 4 minutes its not for you. Other than that its worth the money.
Trustpilot
1 month ago
1 day ago
