Stein Hall Viscosity Cup

Calibration Procedure: Place your finger over the orifice of the viscosity cup and fill the cup with 75°F (24°C) water. Remove your finger and, with a stopwatch, measure the time it takes for the level in the cup to drop from the upper pin to the lower pin. The time should be 15 seconds. If it is longer than that, bend the pins together and check the calibration again. If it is shorter than that, bend the pins apart and check the calibration again. Continue until the time is 15 seconds.

General Instructions: Fill the viscosity cup with strained adhesive and, with a stopwatch, measure the time it takes for the level in the cup to drop from the upper pin to the lower pin. The time in seconds is the Stein-Hall viscosity. Record the time and temperature of adhesive

Measuring pins - use caution if/when adjusting

Manufacturing variations in orifice size and tube diameter make it necessary to calibrate each cup to a known standard. In addition, calibration may be required due to a worn disc or when replacing the disc.

*Sharp pins inside cup, use caution if/when adjusting