There are 4 modes are: TDS temperature, EC temperature, TDS Fahrenheit, EC Fahrenheit, the lower right corner is the temperature display. Press shift to switch between different modes. TDS test range: 0~9999PPM.
eBay
The Digital PH Meter Pen by Liquid Solutions is a handheld water quality tester specifically designed for hydroponics use. This manual operation pH meter allows for easy testing of water pH levels, ensuring optimal conditions for healthy plant growth. The TE02 model provides accurate readings for monitoring and adjusting the pH levels in your water to create the ideal environment for your plants to thrive. Perfect for home, furniture, and DIY projects related to brewing, distilling, and wine making.
eBay
They're known for their reliability and robustness, and a lot of growers won't use anything else.
eBay
1 Water quality testing pen. High sensitivity probe, high sensitivity bulb containing protective fluid, effectively extend the life of the electrode. Large content CR2032 button battery, durable and stable, durable and convenient, can be replaced independently.
eBay
It is water and drop resistant. Even if the tester is accidentally dropped into the water, it will remain afloat. It is easy-to-use as you can just dip the sensor into the test solution - stir and wait.
eBay
Different nutrients get absorbed at different rates depending on the acidity or alkalinity of your nutrient solution, which is why it's important to check and adjust the pH levels of your reservoir tank.
eBay
Press the shift key to switch between different modes. 1-20PCS 3-in-1 Water Quality Tester (Need to choose). Size: 15.5cm X 3cm X 1.5cm. ③ After the value stabilizes, press the HOLD key and take out the reading.
eBay
As you can see from the picture the PH and EC probes are separate, in the unlikely event of a problem with either probe you can simply replace it without having to the whole unit out of action. 2 x Rope Ratchet Heavy Duty Adjustable Hangers Fan Filter Light Fittings 65 kgs.
eBay