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This meter works very accurate and has a micro processor and automatic temperature compensation.

This is the right choice for a low price if you want to grow like an expert.

Technical Data:

* 250 life hours of the batteries

* Batteries included

* Accuracy: +- 0.1 pH

* Increments: 0.1 pH

* Capacity: -2.0 pH up to +16 pH

This meter works very accurate and has a micro processor and automatic temperature compensation.

The ADWA AD-31 is a waterproof conductivity, TDS and temperature tester.

• The housing has been completely sealed against humidity. 
• All conductivity and TDS readings are automatically temperature compensated (ATC),and temperature values can be displayed in °C or °F units. 
• The Conductivity/TDS conversion factor (CONV) can be selected at one point. 
• Measurements are highly accurate with a unique stability indicator right on the LCD. 
• The tester also features a low battery symbol which warns the user when the batteries need to be replaced. 
• The AD32P probe supplied with the meters, is interchangeable and can easily be replaced by the user. 
• The encapsulated temperature sensor allows fast and accurate temperature measurements and compensation.

Adwa AD12 is the most advanced microprocessor based IP67 Waterproof pH/Temp pocket testers in the market.

It is essential when growing with a hydroponic solution to KNOW what the strength of the solution is before feeding your plants AND while they are growing.

If the conductivity reading is too low, your plants may not be getting enough nutrients. If the conductivity reading is too high, plants can dehydrate. Understanding the conductivity of the nutrient solution takes the guesswork out of feeding plants. It will also save you money! 

• Range: 4-44CF; 0.4-4.4EC; 280-3080ppm 
• Resolution: 0.1 EC(1 CF) 
• Accuracy: +/-4% of reading