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Home > Products > Coating Instrument > Fineness Gauges Grindometer Fineness of Grind Gauge

Fineness Gauges Grindometer Fineness of Grind Gauge

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Product Description

STANDARDS: ASTM D 333, D 1210, D 1316; ISO 1524; FTMS 141a

Fineness of Grind Gages also called grind gages and Hegman gages.

Many types of solid materials must be ground or milled into finer particles for dispersion in appropriate liquid vehicles.

The physical properties of the resulting dispersions, often called "grinds", depend not only on the actual size of the individual particles, but also on the degree to which they are dispersed.

The Fineness of Grind Gage is used to indicate the fineness of grind or the presence of coarse particles or agglomerates in a dispersion. It does not determine particle size or particle size distribution.

Grind gages are used in controlling the production, storage and application of dispersion products produced by milling in the paint, plastic pigment, printing ink, paper, ceramic, pharmaceutical, food and many other industries.

The Fineness of Grind Gage is a flat steel block in the surface of which are two flat-bottomed grooves varying uniformly in depth from a maximum at one end of the block to zero near the other end. Groove depth is graduated on the block according to one or more scales used for measuring particle size.

Most gages will have one scale marked in either mils or microns.

1 mil = 25.4 microns

1 mil = 0.001 inch

1 micron, µm - 0.001 mm

The Hegman scale ranges from 0 to 8 with numbers increasing as the particle size decreases.

0 Hegman = 4 mil/100 micron particle size

4 Hegman = 2 mil/50 micron particle size

8 Hegman = 0 mil/0 micron particle size

We offer a wide variety of grind gages varying in scales, number of grooves, length and width of grooves and size of the block.

Comes in a reusable box to prevent damage.

Procedure

Place a slight excess of sample in the deep end of the groove and, with the straight-edge scraper provided, draw the sample toward the shallow end of the groove. Ratings are in terms of the point on the scale where the oversize particles, or furrows made by them, first appear in substantial concentration.

Care of Grind Gages

Clean the gage after each use. Use a solvent and a soft cloth. Keep the gage covered or encased at all times when not in use. Protect gages that lie idle for extended periods of time from rust with an oil coating or oil soaked wrap.

Technical Data

Cat.No	Dims(mm)	Path Width(mm)	No.of Paths	Range (um)	Range (Hegman)	Range (MILS)
JR-2400	120×25×13	12	1	0-15	--	--
JR-2401	120×25×13	12	1	0-25	--	--
JR-2402	165×37×12	12	2	0-15	--	--
JR-2410	170×50×15	12	1	0-15	--	--
JR-2411	175×65×15	14	1	0-25	8-6	--
JR-2412	175×65×15	14	1	0-50	8-4	--
JR-2413	175×65×15	14	1	0-100	8-0	--
JR-2414	170×50×15	12	1	0-150	--	--
JR-2420	175×65×15	12	2	0-25	8-6	0-1
JR-2421	175×65×15	12	2	0-50	8-4	0-2
JR-2422	175×65×15	12	2	0-100	8-0	0-4
JR-2430	175×65×15	37	1	0-15	--	--
JR-2431	175×65×15	37	1	0-25	8-6	0-1
JR-2432	175×65×15	37	1	0-50	8-4	0-2
JR-2433	175×65×15	37	1	0-100	8-0	0-4
JR-2440	240×85×25	25	2	0-25	--	--
JR-2441	240×85×25	25	2	0-50	--	--
JR-2442	240×85×25	25	2	0-100	--	--

Comes Complete with:

Grind Block

Scraper

Application Manual

Reusable Storage Case

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Shanghai Jiuran Instrument Equipment Co., Ltd.

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Fineness Gauges Grindometer Fineness of Grind Gauge

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