Oakton Replacement Sensor for Waterproof Multiparameter Testr35 series Pocket Meters Bio-Fertilizer Model number nomenclature is further

Model number nomenclature is further specified as follows: 5XY: X = 1 (120 Volts) or 2 (230 Volts) Y = E (E-tubes) or F (F-tubes) For example

and magnesium

Electrical Efficiency: 2

S4 Spectrum: Provides highly efficient full spectrum with a healthy red-to-blue ratio to drive photosynthesis

Natural White Metal Halide provides high lumen output and well-balanced spectrum that help plants grow from start to finish

Oakton Replacement Sensor for Waterproof Multiparameter Testr35 series Pocket Meters Bio-Fertilizer Model number nomenclature is furtherReplacement sensor for Oakton Waterproof Multiparameter TestrTM 35 series Pocket Meters (OK3542500 and OK3542505).