PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow

Works great

Seems very well built superfast reading and very reliable. I’ve been using this one for about a year now with zero issues. It’s so much faster reading than the competitors that I’ve used.

They claim that this pen is waterproof and as soon as it dropped in the water it floated but stopped working immediately you can see the water in the screen im pissed off this pen cost almost $100 the cheaper brands is so much better i will no longer ever purchase a blue lab product and i don't believe all the reviews this pen sucks New update 2-5-24 - After opening the battery compartment and removing the battery i shaked the pen up and down to remove the water from out of it then i sat it in my warm grow room in front of a small portable heater for 3 days installed the same battery and screwed the top back on and the pen is working correctly as if nothing happened the reason i gave it just 4 stars is because the pen shouldn't get filled with water and become unusable being that the company says there fully waterproof and especially for how much it cost Late Update Sorry: I opened the battery compartment and took it out and i vigorously shaked the pen then i left it opened in front of a small heater in my grow room for a couple days and it works perfectly still to this day with no problems at all although the pen is waterproof water can still get through the cracks through the battery compartment

This company is great and has long lasting and accurate products. I use all their devices as I deal with a cash crop. I have tried other brands early on only to find them to be inaccurate and a short life. I have dealt with their customer service and they stayed in touch until a service check was done on one of my pens. It ended up that the pen was not faulty and the promptly returned my pen working flawlessly. I have come to trust bluelab’s product line and will not be changing where I choose to spend my money. I recommend this to any new grower to prevent failures in the field.

Great products that ar reasonably priced! every Blue lab product I have bought performs excellent. This EC meter is easy to use & Read.It feels like it is well built. you can get a $ 20 meter somewhere else but you will have replace every year or 2 . When dealing with something as important as EC & PPM for your plants or whatever,get the trusted name proven from years of well built products, Blue Lab.

2 years later I started having issues but the company stood by their warranty. Megan from customer support is by far the best customer service person in the business. Overall thrilled with my purchase. If you are on the fence know that you are not only getting great equipment you are getting THE BEST customer support in the business of ph and EC meters.

I started with ordering the grower's toolbox at the very end of January -- it was delivered February 1st and the EC pen was dead before June 1st. I figured that it wasn't too serious, since sometimes these things happen and it should have a warranty. In the meantime, I decided I'd order a new EC pen since I have to make sure to feed my plants properly -- they're very picky. The new pen arrived within days and after thoroughly cleaning and rinsing, as instructed to before calibration, I attempted to calibrate the new EC pen. No dice. Tried cleaning and rinsing again -- nothing. I contacted Amazon and got a replacement sent (props to Dash for getting me taken care of quickly and painlessly), and tried to clean and calibrate the NEW EC pen...to absolutely no avail. Still getting "Er" code on the display. So it seems that no matter what I do, Bluelab products are simply not worth the effort to try and use and DEFINITELY not worth the cost. It's a shame, really, because I feel like I remember their products actually working when I first started using them 3 years ago or so. I will be looking for a new manufacturer for my plant feed analysis products and highly recommend that anyone reading this review does the same! UPDATE: After having reached out to Bluelab and left a message, I received a call back from a representative that asked for some details related to the products. She guessed that the EC control I was using was expired and sent me new EC solution, as well as pH probe storage solution and pH 4.0 and pH 7.0 controls. After cleaning the probes again and using the new solutions sent to me, both pens (pH and EC) were able to be calibrated. I was told that if, for whatever reason, the new solutions didn't work to contact Bluelab again so that they could rectify the situation. All in all, I'd buy this product again, but probably directly from Bluelab since they pointed out that solutions in/with products sold by other parties may be past their prime.

Instructions could have been a bit better.

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Das Produkt funktioniert einwandfrei. Mir hat es die umweltfreundliche Verpackung besonders angetan, kein unnötiges Material verwendet. Alle Infos inklusive Anleitung wurden innen und außen auf die Packung gedruckt. Stark!

La scatola ha segni di usura, all'interno sul dispositivo c'erano dei PELI, cosa che mi fa pensare che sia già passata per le mani di qualcuno. Inoltre l'oggetto é totalmente starato, misurare diverse acque in bottiglia. La Levissima che dovrebbe avere 80Ppm ne segna 10. Vergognoso per il prezzo a cui viene venduta. Proverò a tararla e valuterò la restituzione non dovessi venirne a capo

I use to verify that my reverse osmosis system works.

Brilliant device