How to measure dispersion using Elcometer Fineness of Grind Gauges

To measure the dispersion (or measure the particle size) of a material, a fineness of grind gauge, also known as a grindometer, is used.

CONTENTS
0:49 Elcometer's Fineness of Grind gauges
2:16 How to complete a test
3:41 How to read the result

Elcometer precision manufacture and supply three different types of fineness of grind gauges, or grindometers.

Dual channel gauges, such as the Elcometer 2020, which are available in various scale ranges, and are ideal for testing the dispersion of many materials including paints, coatings, cosmetics, chocolates, and other similar products.

The Elcometer 2020 gauges are available with either mil or micron scales; and include two other scales as standard - the PCU (North) scale where your material is compared with a known sample, and the NS (Hegman) scale which reports the distance from the deepest end of the channel.

Dual channel gauges also allow you to test different material formulations side-by-side, so you can instantly compare the results.

Alternatively there are high precision single channel grindometers, such as the Elcometer 2050, available in either mils or microns. The combination of the same depth, that’s precision ground across a longer channel, means the Elcometer 2050 allows you to measure to a greater accuracy, of ±1μm (±0.04mil).

And the NPIRI Fineness of Grind gauge, the Elcometer 2070, precision made for determining dispersion in printing inks according to the National Printing Inks Research Institute scale, as well as either mils or microns.

This video will guide you through how to measure dispersion using a grindometer / fineness of grind gauge / Hegman gauge.

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STANDARDS

Elcometer 2020
ASTM D 1210, AS/NZS 1580.204.1, DIN 53203, EN 21524, FTMS 141 4411.1, ISO 1524, JIS K 5600-2-5, NF T30-046

Elcometer 2050
ASTM D 1210, AS/NZS 1580.204.1, DIN 53203, EN 21524, FTMS 141 4411.1, ISO 1524, JIS K 5600-2-5, NF T30-046

Elcometer 2070
ASTM D 1316

[hamzabutt]

Excellent video, very informative. I especially liked 3:49 where the gentleman showed the precise angle to view your results from.
Great work!

[Entertained]

Awesome video, its exactly what I was looking for. Which test method is this from if I may ask?

[MJPlays]

Hi, would you say the result is more d(90) or d(50)