Category

Amateur radio

  1. Calibration Solution Kit — pH 4.0, pH 7.0 & 2.77 EC (3 × 500 ml)
    Hydroponics

    Calibration Solution Kit — pH 4.0, pH 7.0 & 2.77 EC (3 × 500 ml)

    4.4 11 reviews Three ready-to-use calibration solutions (pH 4.0, pH 7.0 and 2.77 EC) supplied in 500 ml bottles to calibrate and validate pH and EC/PPM instruments for hydroponic and lab use.
  2. 4-Inch Flexible Aluminum Vent Duct — 25 ft, 2-Pack with Clamps
    Hydroponics

    4-Inch Flexible Aluminum Vent Duct — 25 ft, 2-Pack with Clamps

    4.7 9 reviews A pair of 4" flexible aluminum air ducts (25 ft each) with stainless steel clamps. Multi-layer construction with a PET middle layer and steel coil for flexibility. Designed for HVAC, dryer vents, grow rooms, equipment cooling and general exhaust tasks where adaptable, heat-resistant ducting is neede