VIVOSUNDigital pH Meter, 3-in-1 TDS/EC/Temperature Meter, 3-in-1 Soil Moisture/pH/Light Tester Combo for Home, Garden and Hydroponics

Why did you pick this product vs others?:A good value for the money

I have owned this Ph and TDS kit for about three weeks now, and so far it seems to be holding calibration well. I compared this PH meter to my friend's high-end PH meter and was pleased to see they only differed in readings by a very small amount. I do recommend storing the PH probe in H2O Sync pH/ORP Electrode Storage Solution or another similar product. to maintain the accuracy and longevity of the probe. And would also recommend periodically calibrating the probe using BOJACK 15 Pack of pH Meter Buffer Solution Powder for Precise and Easy PH Calibration. All of which can be purchased on Amazon for a small price. If you are checking the PH and TDS levels of water for watering plants, then this is an inexpensive and pretty accurate way of doing so without breaking the bank.

Good set for the price. I don't really use the soil meter but the pH am ppm meter work great.

PPM meter is great, and I still use it. The other two were unreliable, and I have since purchased better instruments for PH.

Worked great and long-term

What do I like about this kit? NOTHING.To begin with, they aren't waterproof. What kind of idiot designs a product that is to be immersed in liquids, but doesn't make it waterproof? There isn't even a line on the devices to illustrate where the sensitive electronics begin. That information is pointed out on a slip of paper included with the device.It wouldn't cost the company more then 5 cents per unit to use silicone to waterproof them, so it's just a case of cutting corners for maximum profit.But that wouldn't be the end of the world. Sure, it's a dumb decision, but it isn't necessarily a deal breaker. And you could replace these every month for two years before you hit the amount of money that you would spend on a laboratory grade pH tester. So, there is that.The major problem is that it simply isn't accurate. The pH tester seems to calibrate just fine, but every time that I test the same sample, I end up with a different number. It's the same sample, how can the numbers change every time I dip the sensor in the water?And I don't mean, "It was 5.7, and now it's 5.9." I mean, "It was 5.7, and now it's 4.8, no, now it's 6.2, wait it's 5.3" ***sigh***Then there is the device settings itself. The backlight shuts off after two minutes, but it takes up to 5 minutes to get an "accurate" reading according to the manual. The dark gark grey text on a light grey background isn't super easy to read after the light turns off. Pushing the power button will turn the light back on. Or maybe it will turn the device off. The R-N-G Gods will determine that for you.The device has a 5 minute auto-shutdown that can't be disabled. What kind of idiot designs a device that shuts off at the EXACT MOMENT it is supposed to achieve an "accurate" reading? And, then, when you restart the process you get a different result.This is the only Vivosun product that I own. It will be the only Vivosun product that I EVER own. You get what you pay for. And what Vivosun has taught me with this device, is that Vivosun provides cheap trash to unsuspecting customers.I'll be purchasing a proper waterproof, lab grade pH tester. If I'm gonna get high quality hydro grows, it only makes sense to invest in decent equipment.

This is a really great product, all the meters work very accurately. I'm reading the instructions is very important to fully understanding the devices. Easy to read easy to operate, again very accurate. I am very very pleased with these products, they have made my growing experience far better than I actually imagined they would. There's really not much else to say. I do recommend ordering directly from vivosun so you don't have to wait 3 weeks to a month for them to be delivered.

works good