Bluelab 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

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.

Broke down & bought the more expensive ppm meter, well worth it! Don’t waste your money on several cheaper ppm meters. When ppm levels are apart of your daily grow get this one & you won’t regret it!

Accurate and stays calibrated

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.

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

I was doubtful about spending the money for a ppm pen, but I took the plunge and could not be happier. This pen is very easy to use. You can change the pen to read PPM in the 500 range, 700 range, and EC or Electrical Conductivity. My vegetables leaves were looking very light green, almost yellowish. Once I started using the pen, I was able to adjust my nutrient solution into the proper range and within a couple of days all the leaves started to look healthy with a dark green color. This pen uses one AAA battery. The display also illuminates when you turn the unit on, off, and use the hold feature. I didn't realize it illuminated until I used it early in the morning. Get this pen and happy growing.

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.

Highly recommend this accurate and built to last EC/TDS meter. I use this meter daily for monitoring the TDS of hydroponic system and this meter is by far the best. I’ve had numerous other cheap and one 3 in 1 meter in the past and they all stopped working accurately after only a couple of months of use to the point the weren’t able to be recalibrated. The BlueLab EC/TDS meter works without fail every time and it has a replaceable battery!!

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I haven’t had any issues yet

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