Digital 4-in-1 Water Quality Testing Kit - High Accuracy Digital pH/TDS/EC/Temp Pen Set Perfect for Hydroponics, Pools, Koi Ponds, Drinking Water, Wine/Beer Making, Hot Tub, Spa, Aquarium

Quality product, good price and fast shipping.

Good for testing the water PH

Seller should inform buyer where to buy calibrating solution. Add more printed information on how to understand the use of the scanner by providing alkalinity of the water.

The meters arrive in appealing packaging, which is designed for storing and protecting the meters, when not in use. Easy to follow instructions are also included. I have used the TDS meter to measure my reverse osmosis water, which will determine when I need to change my filters. I also have used the pH meter to measure the pH level of my hot tub, pond and fish tank. Both meters are simple to use with quick and accurate readings. I would definitely purchase this product again as well as recommend it for others!

The AERO-GRO Digital 4-in-1 Water Quality Testing Kit is a high accuracy digital pen set for measuring pH, TDS, EC, and temperature levels. It's suitable for a variety of applications including hydroponics, pools, koi ponds, drinking water, wine/beer making, hot tubs, spas, and aquariums.

This meter was instrumental when I first got it. After a few months of every few days use, it’s no longer accurate and gives an error when attempting to calibrate in buffer solution. After researching pH meters, I’m wondering if the lack of storage solution had something to do with it as this unit arrived with the probe dry. Outside of my return window, otherwise I’d have taken a replacement to try with proper storage.

Works okay not bad if you don't wanna use the drip tester..

I gave it to my daughter for her birthday. She has a fish tank. And I take it is very easy for her to use.