HydroponicsBrands Bluelab Bluelab Bluelab Soil pH Pen |°C/°F The Bluelab Soil pH Pen provides a pH and temperature reading of soils and media, so you know that the right nutrients will be made available to your plants. In Stock €149,90 Add to cart Bluelab - 2.77 EC Conductivity Standard Solution - 500ml Bluelab - 2.77 EC Conductivity Standard Solution 500ml, High quality solutions formulated for calibrating and/or testing conductivity probes. In Stock €10,99 Add to cart Bluelab - 2.77 EC Conductivity Standard Solution - 250ml Bluelab - 2.77 EC Conductivity Standard Solution 250ml, High quality solutions formulated for calibrating and/or testing conductivity probes. In Stock €7,59 Add to cart Bluelab - Probe Care Kit - EC Bluelab - Probe Care Kit - EC Everything you need to clean, hydrate and calibrate pH probes. Out Stock €13,55 Add to cart Bluelab - Probe Care Kit - PH Bluelab - Probe Care Kit - PH Everything you need to clean, hydrate and calibrate pH probes. In Stock €16,11 Add to cart Bluelab - Probe Care Kit - PH EC Bluelab - Probe Care Kit - PH EC, everything you need to clean, hydrate and calibrate pH probes as well as clean and test conductivity (ppm/EC) probes. In Stock €23,78 Add to cart