0.6" LCD PH Test Pen Set (3*AG13)

Pros: It's unexpensive, looks like Milwaukee PH pen, comes with a case, calibrating screw, and two calibrating solutions.

Cons: Is not accurate, even if you calibrate with the solutions included, when you try to make a reading it goes to far up than the real PH value. I compared the reading with the Milwaukee PH pen after calibrated both in the same solution, and this PH pen just dont read an acurated value at least on saltwater, if you return this to the calibrating solution you need to calibrate again.

Other: Useless, not acurate reading better use PH strips than this PH pen

Pros: Well I am actually working as delivery guy in a chemist bureau. I am learning still, buy it seems its easy to use it. It came on great time and makes me look smart... sort of.

Cons: I just read the previous post. If this stuff is not accurate I might be on trouble, serious! It also ran out of batt. I have to buy fresh ones.

Other: Better than other methods I have tried and used before. Better than those papers. Hope it is accurate. Regards

Pros: Measure the pH quickly, accurately and with great ease. Can I measure the pH of my aquarium without fear of inaccurate values??.
The test is easy to be calibrated and comes with batteries and key.
Comes with carrying case which allows storing it safely.

Cons: None

Other: I recommend the purchase without fear.

Pros: This instrument works well and is quite accurate, I use it daily and results are always consistent. The test is easy to calibrate and comes with batteries and screwdriver for calibration. Also comes with carrying case which allows storing it safely.

Cons: To date there are no cons found with this PH test pen.

Other: If you need a good quality PH meter then this is the one to get as it is good value for money and accurate.

Pros: The product is fairly accurate, but you must calibrate it before use. Accompanying substances with ph known for calibration.

Cons: It´s dificult to clean. I suggest to use distilled water to clean. Not recommend to use with hot substance, because the plastic doesn´t see very resistance.

Other: For the price, it´s the best choice for who need to measure a ph of some substance, in my case, it´s used to check the ph of my beer.

Pros: For the price, is definitely a good deal. I don't have any other ph meter to compare with, but after calibration is pretty accurate. I measure ph of some bottled water and the measure was the same as indicated in the bottle. I reccomend!

Cons: The calibration is a little annoying. I have to buy distilled water to mix with de solution, but is easy to find and not expensive. One could buy de liquid solution too, it will make it easy.

Other: I use for hydroponics, works fine.

Pros: excellent instrument for measuring ph. as effective as three times more expensive models. Fast test in 3 seconde ! it is a little more accurate than the test liquid

Cons: it does not look very solid but hey it is not done playing with. the screen is a bit small but still readable even.

Other: I highly recommend the purchase of this instrument because it's a big gain of time.

Pros: - adjustable - works better then my A-brand PH meter - instant readout (although wait a bit when you use it in low mineral water...) - even a mini-screwdriver to adjust it - nice housing case. So easy to store when not used.

Cons: - at the moment, none at all

Other: Get one here, cheaper and much better!

Pros: Sturdy construction shows the result in seconds solution provided for calibrate easy to use used in aquarium, works well small screw driver provided for calibration price is not too high although not to low either

Cons: a bit difficult to clean have to calibrate

Other: quite useful and handy to use....

Pros: Good tester, easy to calibrate and operate. It provides persistent measurement results. Very good to use for aqua/aeroponics or fish keeping. It comes with calibration solutions ( dry, just add water to produce solutions).

Cons: I had to purchase 2 of them, cos first i received had senser damaged, so te pen just does not work properly. Second one is just OK and works great. I'd like to have better english user guide.

Other: Very good product to be used in whatever application you like.