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Dosatron® D128R Medicator

QC Supply Part #: 120606
Shipping: Standard
Availability: In stock
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This injector boasts more than 30 years of field experience.


The Original Medicator from Dosatron®! Ideal for Antibiotics, Vaccines, Vinegar, Chlorine and Disinfectants.

Dosatron's® 7-gallon, flat-top D128R Injector has withstood the test of time. More than 30 years of field experience have shown this to be the injector of choice for most producers.

It's installed directly in the water supply line and uses water pressure as its power source, The water activates the Dosatron®, which then takes up the required concentrate percentage and mixes it with water. The water pressure forces the solution downstream. The dose of concentrate is directly proportional to the volume of water entering the Dosatron®, regardless of variations in flow or pressure in the main line.


  • 3 Fixed Ratios: 1:200, 1:128, 1:100
  • Injection Percentages: 0.5% to 1%
  • Maximum Temp: 104° F
  • Housing Material: Polyacetal (Standard Blue)
  • Dimensions: 13" x 6 1/4"
  • Weight: 4 lbs.
  • Included Accessories: 6' Clear Suction Tube, Strainer, Weight, Mounting Bracket and Operating Manual
  • Recommended Accessories: 200 Mesh Filter, Check Valve, Pressure Regulator, Flow Restrictor
Item #ModelFlow RateInjection RatioOper. PressureInlet/Outlet
120606 D128R .09-7 GPM 1:200,1:128,1:100 7-70 PSI 3/4" NPT
120607 D25RE2 with Bypass Top .05-11 GPM 1:500 to 1:50 4.3-85 PSI 3/4" NPT
120610 D25RE2 without Bypass Top .05-11 GPM 1:500 to 1:50 4.3-85 PSI 3/4" NPT
120605 D8R 2.2-40 GPM 1:500 to 1:50 2-110 PSI 1 1/2" NPT
120608 D25F .05-11 GPM 1:128 4.3-85 PSI 3/4" NPT


Brand Dosatron
Manufacturer Part Number D128RVTII





Manuals & Resources


Customer Reviews

  • 5 Stars

    Excellent product

    Review by on Oct 31, 2015

    Very easy installation. Performance was exactly as specified. I verified this with an electrical conductivity meter. Perfect for delivery of fertilizer in a small greenhouse.

  • 5 Stars

    this product is excellent for the small greenhouse

    Review by on Apr 28, 2012

    we have a 30 X 60 greenhouse and grow orchids. I mix my own fertilizer. This size Dosatron is ideal for us, we fertilizer once a week.

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