Product Description:New name! New label! Same easy to use meter! Now with the 4 most popular scales: EC, CF, 500:1ppm, and 700:1ppm! The E.C. Dipstick dissolved salts pen operates on 3 common inexpensive AA alkaline batteries. Measures in PPM, EC and CF scales.There is no calibration required. It calibrates itself each time you replace the batteries. It is water resistant so a light emersion in the plant nutrient should not hurt. However, it is a good idea to test small amounts of nutrient away from large bodies of water just in case you have butter fingers.
HydroMan
