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Rugged Construction | GIPSA Approved | NTEP Certified | Built in the USA.


Proven design and best-in class features

Introduced in 1976, GrainGrader™ was the first grain-grading scale — setting the standard for performance, durability and affordability — and after 45+ years continues to define excellence.

The GrainGrader™ has a 110 VAC filtered power supply to reduce the effect of normal line noise and 100% overload protection and is designed for accuracy, efficiency, and quality control. Plus, superior build quality and all-stainless construction makes the GrainGrader™ easy to clean and provides outstanding long-term value.

Best-in-class features give operators pinpoint control to calculate dockage (foreign material) percentage; and determine weight in pounds per bushel or kilograms per hectoliter.

Easy set-up for any requirements: standard or reciprocal percentage; cup selection in quart, pint, or liter; active or frozen percent; and test weight. Samples can be stored in Memory. The optional RS232 cable sends data to a computer or printer.

GrainGrader™ is on the GIPSA Approved Equipment list and is certified legal for trade by NTEP.



  • Calculates dockage (foreign material) to 0.01%.
  • Test weights in pounds per bushel or kilogram per hectoliter to 0.01.
  • Can be configured for three commodity cups.
  • (quart, liter, or cup).
  • All stainless-steel construction – durable and easy to clean.
  • Proprietary overload protection to ensure long life.
  • Motion detection to eliminate errors in zeroing, printing, and storing sample values into Memory.
  • Push button 2-point calibration & parameter programming.
  • NTEP certified for accuracy and legal for trade.
  • Built in the USA.

Doran Grain Grader: Grain Dockage Scale

Excluding Sales Tax
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