KU-3 Viscometer


The KU-3 Viscometer displays, Krebs units, gram units and centipoise for paints, coatings and inks.

Brookfield offers a completely digital calculating Krebs Unit Instrument with all the reliability you’d expect in Brookfield instrumentation…now with relative centipoise display.

Why the KU-3? This instrument is used widely for making viscosity measurements on paints/coatings in accordance with ASTM D562.


  • Continuous sensing and display in Krebs units, grams, and centipoise.
  • Magnetic spindle coupling.
  • Allows rapid sample measurement to determine required consistency.
  • LED Digital Display of: Krebs Units (increased resolution in 0.1 KU increments), Grams (in 1 gm increments) and Centipoise (cP).
  • Expanded measurement range (40 to 141 KU; 32 to 1099 g; 27 to 5274 cP).
  • Accuracy to ±1% of full scale range.
  • Reproducibility to ±0.5% of full scale range.
  • Easy to use; no weights; simplifies an established test procedure.
  • Compatible with industry specification (ASTM D562).
  • Base accommodates standard pint, ½ pint, and quart cans.
  • The optional paste spindle is suitable for use with high consistency materials such as roller mill pastes.
  • NIST traceable viscosity standards available.


Paints & Coatings

What's Included

Krebs Spindle
Communications Port for Printer
Adapter for Pint and Half Pint Cans


Range:  40-141 KU
32-1,099 g
27-5,274 cP*
Accuracy: ± 1% of full scale range
Repeatability: ± 0.5% of full scale range 
Paddle Speed: 200 rpm ± 0.1 rpm
Net Weight: 18 lb. (8.2 kg) 
Gross Weight: 22.5 lb. (10.2 kg) 
Dimensions: 21 x 12 x 17in – Carton
Operating Environment: 0°C (32°F) to 40°C (104°F) 
0% – 80% R.H.: non-condensing atmosphere
Ingress Protection Rating: IP20

* Centipoise scale is for reference only.  Do not use for calibration.


KU-3 Brochure