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The Original FLAT TOP Medicator. The D128R is the medicator that producers have relied on for over 30 years. Shipped preset with the most common 128:1 ratio, the D128R can be changed to a 1:200 or 1:100 injection ratio by simply moving a pin.
For a complete list of replacement partsCLICK HERE
PDF of owners manual
1:200/1:128/1:100 (.5% to 1%)Pre-set at 1:128
Polyacetal (Standard blue)
WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.