Overview
The ISO flow cup is designed and manufactured according to the international standards ISO2431-1993 and GB/T6753.4-98 to test the outflow time of Newtonian or similar Newtonian liquids. The product model is ISO-6 #, and the flow hole diameter is 6mm.
Features
1. Design and manufacture according to international standard ISO2431-1993 and national standard GB/T6753.4-98.
2. The cup body is made of anodic oxidation aluminum, and the nozzle is made of stainless steel, which is sturdy and durable.
3. Used to determine the outflow time of Newtonian or near-Newtonian liquids.
Principle
The viscosity characteristics of the liquid are characterized by the measurement of the time when a certain volume of liquid flows out of the nozzle with a specified aperture at the bottom of the standard flow cup under the action of gravity. There is a specific calculation formula relationship between the outflow time and the kinematic viscosity of the liquid.
Applications
Determination of outflow time of Newtonian or near-Newtonian liquids such as coatings and varnishes
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. Put 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
• The stopwatch needs to be brought by yourself, and the accuracy requirement is 0.1 seconds.
• The flow cup bracket is optional.
• Pour the liquid slowly to avoid bubbles.
• In order to obtain more accurate data, the outflow time can be measured multiple times and the average value can be calculated.
• Clean the inner wall and outflow hole in time after use.
