Quick measurement of the viscosity of liquids Constructed of one-piece, corrosion resistant ASTM (899-94) series 400 stainless steel Suspension handle holding cup Hole outside diameter is 0.108? Range is 20-75 sec More About this Item Measure the viscosity of liquids such as paint, lacquer, oil, and syrups. Simply insert the cup into your sample and lift the viscosity cup out, starting a stopwatch/timer. Cup is made of series 400 stainless steel and requires 44 mL of sample for the test. After withdrawing the cup, measure the time it takes until the first break in the liquid stream. A conversion sheet is supplied that will convert the Zahn time to a centistokes value. The suspension handle holding cup is 12.078 in (30.51 cm) for dipping into liquids.