I liked it at first, but then after a few months of usage, I realized that it was providing wildly inaccurate readings, even after fresh re-calibrations.

This is a very nice kit with excellent calibration instructions

Calibration is easy, and you can even replace the probe when it goes bad, rather than a whole new pen.

The probe itself came with a small bottle of pH 7 and of pH 4 calibration solutions (good for 15 uses), plus a lanyard and user instructions

Easy calibration.

I bought the meter in the past tired of replacing cheap $15 Chinese meters and at the beginning was really happy with, needed very little calibration and my plants and the fish tank were happy, 3 months later this expensive one also failed but even worse the cheap Chinese ones most of the time the probe was the issue as it easily breaks this one won't even turn back on after only 3 months of use, I expected a lot more by paying 4 times the price of a cheap one, guess I was wrong, stay away from this Chinese cheap crap even if it looks as expensive crap.

This is why I recommend this meter:• High quality device, built well, comes with its own carrying case.• Customer service at Apera is great and can be reached over the phone in minutes• Comes with re-usable calibration solution that works correctly out of the box• 2 year

This is why I recommend this meter:• High quality device, built well, comes with its own carrying case.• Customer service at Apera is great and can be reached over the phone in minutes• Comes with re-usable calibration solution that works correctly out of the box• 2 year

Calibration is a little tricky but works well.

Easy calibration, still taking great readings

This time, calibration worked fine and I am now seeing the correct 7.2 pH for my home water

The calibration is so easy

Comes with buffer calibration solution enough to last a year or more.

Tester will not perform a successful calibration

It’s fast and accurate and the calibration is so easy I’ve been using it for about 9 months

Calibration is a little tedious for a beginner, but I'm sure with time I'll get used to it

Calibration is so easy and this thing is drop-dead accurate!

They always lost calibration and eventually went bad and had to be replaced.

has held a perfect calibration for a month strait

Calibration was a slight problem, simple directions led me through it

Cons: Only two calibration

Calibration is easy

The kit came with two calibration reference solutions of PH 4 and PH 7 and the calibration was easy to perform.

Fast readings, easy calibration and enough accuracy for my purpose – definitely buy this one!

Have checked calibration regularly and it has not lost it yet.

Apera, you just can't get any better, it's accurate every time, and calibration is easy.

Calibration is a little tricky but works well.

It holds a calibration well and reads quickly.

Calibration was very easy and has maintained the calibration level for a while now "over a month".

Comes with calibration solutions and easy to follow instructions

This one was slow to Give reading and lost calibration easily

I bought the meter in the past tired of replacing cheap $15 Chinese meters and at the beginning was really happy with, needed very little calibration and my plants and the fish tank were happy, 3 months later this expensive one also failed but even worse the cheap Chinese ones most of the time the probe was the issue as it easily breaks this one won't even turn back on after only 3 months of use, I expected a lot more by paying 4 times the price of a cheap one, guess I was wrong, stay away from this Chinese cheap crap even if it looks as expensive crap.

even make it past the calibration.. pathetic and it’s crazy these guys have such good reviews with such a bad product

If I do not use it for extended periods of time, all I have to do is follow the simple calibration instructions and BOOM

The OTHER companies send calibration powders :(.All in all I love this tester and would absolutely recommend it to anyone else in need of a simple,

Initial calibration was bit fussy but it becomes

I really like how easy the calibration is, I use it for testing spring water I get from out local spring.

I love this meter is very accurate and stays calibrated for a very long time amazing storage case and a very easy user friendly calibration procedure

Calibration was a little confusing but the package had everything needed to get the job done

Keeps it's calibration well and liquid PH test samples to zero out.

Easy calibration and storage case included.

Consistent readings, and easy calibration the only critique I could give is that if you add storage solution to the cap and store the tester it can leak sometimes. doesn't ruin anything but is the only thing I can see so far to improve.

Quality tester with easy calibration.

Calibration is easy and straightforward making streamline achievement of accurate measurements

Calibration is easy and stays accurate.

Impressed how well it hold calibration.

A bubble will throw your readings off and will mess up your calibrations.

Calibration is easy and convenient since this comes with the calibration solutions

works great, includes calibration solutions, very happy.

Works well, calibration is easy

Works as it should.

so I can do a 3 point calibration as well as it came with the container to store the calibration fluid in during testing.

I'm not sure what caused the glass to break as it did not make direct contact with any solid object which justifies my 2 star review.

Works as it should.

so I can do a 3 point calibration as well as it came with the container to store the calibration fluid in during testing.

I'm not sure what caused the glass to break as it did not make direct contact with any solid object which justifies my 2 star review.

n’t believe how fast it lost sensitivity

This meter has a nice cap with an O-ring that does not leak, so I expected it to last a while