Overview
PUSHEN ISO-4 #flow cup is designed and manufactured according to the international standard ISO2431-1993 "Determination of outflow time with flow cup for Paints and varnishes" and the relevant provisions of our country's national standard GB/T6753.4-98 "Determination of outflow time of coatings - ISO flow cup method". The product is used to test the outflow time of Newtonian or similar Newtonian liquids.
Features
1. Design and manufacture according to international standard ISO2431-1993 and national standard GB/T6753.4-98 to ensure the standardization of testing.
2. The cup body is made of anodic oxidation aluminum, and the nozzle is made of stainless steel, which is sturdy and durable.
3. It is used to determine the outflow time of Newtonian or near-Newtonian liquids and can be converted into kinematic viscosity.
Principle
The ISO flow cup characterizes the flow characteristics of a liquid by measuring the time it takes for a volume of liquid to completely flow out of a standard-sized outflow hole under gravity. For Newtonian or near-Newtonian liquids, there is a definite conversion relationship between outflow time and kinematic viscosity, which can be calculated by the formula V = 1.37t-200/t (for ISO-4 #cups).
Applications
Outflow time and viscosity test of Newtonian or near-Newtonian liquids such as coatings, varnishes, inks, and Adhesives
Standards
ISO 2431、GB/T6753.4-98、ASTM D5125
Steps
1. Before or after measurement, repeatedly wipe the inner wall with fine gauze dipped in solution, twist it into a rope with soft paper, and repeatedly pull it clean in the outflow hole.
2. Place the flow cup on the bracket and adjust the bracket level.
3. Prepare a stopwatch with an accuracy of 0.1 seconds while holding the outflow hole with your hand.
4. Slowly pour the measured liquid with controlled temperature into the flow cup to avoid bubbles. When the liquid exceeds the mouth of the cup, scrape it flat with a scraper or Glass.
5. Start the stopwatch and quickly release the finger that presses the outflow hole. When the outflow liquid is interrupted, press the stopwatch instantly to record the outflow time.
Notice
• Thoroughly clean the inner wall and outflow hole of the flow cup before use.
• Make sure that the flow cup bracket is in a horizontal state during the test.
• When pouring the tested liquid, it should be slow to avoid bubbles.
• After the liquid is filled, scrape the mouth of the cup with a scraper.
• In order to obtain more accurate data, the outflow time can be measured multiple times and the average value can be calculated.
• The stopwatch (accuracy 0.1 seconds) and flow cup bracket need to be brought by yourself or purchased.
