Meets ASTM D 1084A

• Viscosity Range of Cups 1 - 4 (7-15000 cs)
• Accuracy
  • #1 Cup ±3%;
  • #2 Cup ±3%;
  • #3 Cup ±3%;
  • #4 Cup ±5%
• Meets and exceeds ASTM D 1084 method A and Federal Specifications MMM-A-189C
• Includes Gardco conversion table relating drain time in seconds to viscosity in centistokes
• Calibration traceable to NIST standard oils in accordance with ISO 9002
• Calibration and certification procedures qualify under ANSI/NCSL Z540-1 or MIL-STD-45662A as applicable
• Dimensions: 1.50" Dia x 3.687", Tall without drip well

Bring the sample to be tested and the Gardco/Parlin viscosity cup to a temperature of 23 ±0.5C (73.4 ±0.9F) (preferably in a constant-temperature room). Then mount the viscosity cup in in a suitable clamp holder for this purpose and place the receiving cylinder in position so that the distance from the Parlin cup base is 8" above the base of a low form graduate. With the outlet of the cup closed by means of the finger, pour the sample into the cup until it is filled to overflowing.

Strike off the excess with a straightedge, and then remove the finger from the outlet and allow the sample to flow into a clean, empty 90-100mL graduated glass receiving cylinder. With a stopwatch, determine the number of seconds from the time the finger is removed from the orifice until the top of the meniscus in the receiving cylinder reaches the 50mL mark in the cylinder. Record as the viscosity time of the material.

Note in the case of the high viscosity range #4, formation of air bubbles in the viscosity standard after just one test run makes repeat runs inaccurate unless done at another time. Typically, with heavier bodied liquids, a settling period of 24 hours is necessary for air bubbles to dissipate. With due care, this precaution need not be observed with cups 1, 2 & 3.