Waterproof Conductivity Meter (Pen Style) Meters & Solutions please ensure that treated seeds

please ensure that treated seeds are not accessible to birds as ZeroTol is toxic to them

2 and 12 ft - 21

How often should I calibrate it

use clean ethanol to wipe down the sealing surfaces for the next run

Waterproof Conductivity Meter (Pen Style) Meters & Solutions please ensure that treated seedsHighly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Simultaneously displays the parameter being measured and temperature in C or F. Features automatic temperature compensation, 2 pt. calibration, auto power off, hold function, and a low battery indicator. The case is IP65 waterproof, and will float if accidentally dropped into the water. Comes with 4 button cell batteries and a built in probe with