Overview
The PUSHEN Ford viscosity cup (Ford-4 #) is a Viscometer made according to the American Society for Testing and Materials standards ASTM D 1200, D333, D365. It is specially used to determine the viscosity of inks, coatings, paints and other fluids. It is refined from a high-quality aluminum cup with a capacity of about 100ml and a small hole in the bottom. Tack is determined by measurement of the time it takes for a specific volume of sample to flow out of the cup.
Features
According to international standards ASTM D 1200, D333, D365 production, reliable measurement results.
2. The cup body is made of cathode aluminum oxide, and the nozzle material is brass, which is sturdy and durable.
3. Well-designed and easy to operate, it is a convenient tool for viscosity comparison testing.
4. The factory nozzle diameter has been calibrated with standard Newton oil dating back to NIST to ensure initial accuracy.
Principle
The Working Principle of the Ford viscosity cup is to characterize the viscosity of a sample by measuring the time it takes for a sample of a certain volume (about 100ml) to completely flow out of a standard small hole in the bottom of the cup. The longer the outflow time, the higher the viscosity of the sample is usually indicated. Test results are expressed in seconds and can be converted to centistoke (cSt) units with reference to ASTM D 4212.
Applications
Inks, paints, paints
Standards
ASTM D1200、ASTM D333、ASTM D365
Steps
1. Thoroughly clean the cup body and flow hole with a suitable solvent before use to ensure that there is no residue and drying.
2. Select the appropriate cup number according to the estimated viscosity to control the outflow time between 20 and 80 seconds.
Stir the sample evenly and filtrate, adjust the sample and flow cup temperature to (23 +/- 0.5 ° C) or the agreed temperature.
4. Adjust Ford viscosity cup holder to level.
5. Plug the flow hole with your finger or baffle, fill the cup with the sample, scrape the liquid level with a scraper, and place the receiving container.
6. Release the finger or baffle to allow the sample to flow vertically, and immediately start the stopwatch timing. Stop the timing when the flow first appears at the breakpoint and record the number of seconds.
7. repeability measurement three times, take the average value as the final viscosity value.
8. Clean the cup with a suitable solvent immediately after the test, and avoid using metal tools to clean the flow hole.
Notice
• During use, it should be handled with care to avoid damage or deformation of the flow hole caused by drop or collision, which will affect the Measurement accuracy.
• The instrument should be calibrated regularly once a year (no need to calibrate in the first year after leaving the factory), calibrated with standard silicone oil and in accordance with relevant national Measurement procedures.
• When cleaning, never use metal cleaning tools or wires. If there is dry sediment in the flow hole, use solvent softening first, and then use a soft cloth to carefully wipe and clean.
• Test results should be expressed in "seconds" at the specified temperature, and the conversion unit should be referred to the ASTM D 4212 standard.
