Bluelab Probe Care Kit - Conductivity eco-plus while the EL2 has 2

while the EL2 has 2 output channels and additional outputs for External Contactor Modules and alarm contacts

then add Cultivation Nation® Micro to provide essential micronutrients

which saves money

making this unit extremely versatile

Bluelab Probe Care Kit - Conductivity eco-plus while the EL2 has 2The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor or controller. If the probe is contaminated or dirty, it affects the accuracy of the reading displayed. Conductivity kit contents: instructions, 500ml 2. 77 EC solution, plastic cup, conductivity probe cleaner and chamois (probe cleaning instrument).