GroLine pH/EC/TDS Multiparameter Probe (Inline) led the drops then fall 3/4

the drops then fall 3/4 inch below the surface dispensing out of the three slots at its bottom

1-pound case contains 4: 1 pound bottles

For soil/container gardening

This is done in order to ensure proper mixing of spectrual output

GroLine pH/EC/TDS Multiparameter Probe (Inline) led the drops then fall 3/4The HI1285 9 inline multiparameter probe measures pH, EC TDS, and temperature in one convenient, rugged probe. Use with the HI981421 GroLine Monitor to provide around the clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. In line pH, EC, & TDS probe with exclusive PTFE non clogging membrane. Built in temperature sensor ensures fast, accurately compensated readings even during sudden