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Gardco S90 Zahn Signature Series Viscosity Dip Cups - VI-2105


Gardco S90 Zahn Signature Series Viscosity Dip Cups are an improved version of the time honored Zahn Signature viscosity cups, used to determine the flow time of paints, coatings, enamels, oils and other similar liquids. A twelve inch looped stainless steel handle allows the cup to be dipped by hand into a liquid container, delivering 44 cc's of liquid sample through a precision orifice. At the top of this handle is a stainless steel split key ring for aligning the cup in a true vertical position when conducting tests.

To conduct a test, measure and record the temperature of the material that is encompassed by the cup. At the same that the cup is withdrawn from the material, start a timing device. Carefully observe the efflux stream and at the first distinct break in the stream near the base of the cup stop the timing device. Record the number of seconds of efflux, including the cup type and number.

  • S90 Zahn cups qualify for certification under ANSI/NCSL Z540 or ISO/IEC 17025, ISO 9001, as applicable
  • S90 Zahn cups are calibrated with standard "G" series oils traceable to the National Institute of Standards & Technology
  • Furnished with each S90 Zahn cup is a conversion table relating cup efflux time to the nearest tenth of a second to viscosity in centistokes

Gardco is the only producer authorized to use the Zahn name and has added the S90 designation to identify the improved viscosity cups manufactured on new state-of-the-art equipment to ensure optimum quality and uniformity.

Part Number: VI-2105
Attribute nameAttribute value


Cup Number :5
Seconds Range :10 to 60
Centistoke Range :219 to 1627