The best selling hydroponics EC Meter in the world. Growers prefer the Bluelab Truncheon because it's easy to use, easy to read, extremely accurate and best of all it's reliable.

Features:

• EC, CF and PPM scales
• Fully waterproof
• Factory calibrated
• Auto turn on and off
• Battery life minimum of one year (or shelf life of battery)
• No external switches or adjustment knobs
• EC (0.2 - 3.6), CF (2 - 36) and ppm scales (TDS and 700 scale)
• Uses 3 x AA alkaline batteries (included)

Testing is simple;

Dip the end of the Truncheon into the nutrient solution and wait for a minute or two for the Truncheon's probe to reach the same temperature as the nutrient.

• Remove the Truncheon from the solution, and then dip back in again to take the reading.
• The flashing lights along the side represent the value of the solution.
• It doesn't get any easier.
• Don't forget to rinse under fresh water after use, and clean once a week.

Handy Hint:  95% of all Truncheons returned to Holland Forge as 'Faulty' only require cleaning or new batteries. It's a great idea to buy a Cleaning Kit which contains everything you need, and check out the Cleaning Guide to keep your Truncheon in tip top condition.

The Bluelab Guardian Monitor constantly measures conductivity, pH and temperature levels, and displays it in an easy to read LED.

Many factors determine how fast plants take up nutrients; season, stage of growth, temperature, and available light, just to mention a few. And with these variables the critical elements of the hydroponic nutrient can readily change. The Bluelab Guardian monitor makes the task of balancing these changes easier.

Features:

• Adjustable display brightness
• Three large easy to read displays
• Green 'Plant Safe' LED display
• Selectable values for conductivity and temperature
• Simple push button pH calibration
• No calibration required for conductivity and temperature
• Silent alarm
• All settings are retained if the power is lost
• Automatic temperature compensation
• Mains power supply
• Water resistant design
• Bluelab 2 year guarantee (6 months on pH probe) 

• Built in Wi-Fi (option to turn off)
• Instant alarm alerts to your phone
• Remote monitoring and control
• History reporting to assist data-driven decision making

Instruction Manual

Probe cleaning is one of the most important parts of owning and operating any Bluelab meter. If the probe is contaminated or dirty, it affects the accuracy of the reading displayed.

The probe surface is where the instrument takes the reading of the solution. The information is sent back from the probe to the electronic brain of the instrument.

• Easy to clean
• Fully waterproof to 10 metres
• Gel filled (non-refillable)
• Maintenance free