Particle Size Distribution (Alpine Granulation) Test

Price of the test:

$40 per sieve

Acceptable Matrices:

Powders and particulates

Unacceptable Matrices:

Liquids, particle sizes > 37 micrometers

Limit of Detection:

US Standard sieves from #10 to #400, with sieve openings from 2000 to 37 micrometers.

Sample Size Requirements:

25 grams

Equipment:

Alpine Air Jet Sieve

Reportable Units:

% retained on each sieve

Turn Around Time:

7-9 Business days

Is Rush Available?

Yes

Method Reference:

Internally Developed Method

Method Description:

The Alpine Air Jet sieve tester measures the particle size profiles in powdered ingredients and products. The Alpine uses an air jet to lift particles from the surface in conjunction with a vacuum to draw them back down and through the sieve. This action prevents sieve binding.

Information Required by Submitter:

Please provide the sieve sizes to be tested, either US Std sieve numbers or particle size range to be covered (micrometers, millimeters, or inches).

Additional Information:

This is the optimal test to use on products that may bind to a sieve.

Alpine Sieve Sizes

Sieve #	Opening (“)	Opening (μm)
#10	0.0787	2000
#12	0.0661	1680
#14	0.0555	1410
#16	0.0469	1190
#18	0.0394	1000
#20	0.0331	840
#25	0.0280	710
#30	0.0232	590
#35	0.0197	500
#40	0.0165	420
#45	0.0138	350
#50	0.0117	297
#60	0.0098	250
#70	0.0083	210
#80	0.0070	177
#100	0.0059	149
#120	0.0049	125
#140	0.0041	105
#170	0.0035	88
#200	0.0029	74
#230	0.0024	62
#270	0.0021	53
#325	0.0017	44
#400	0.0014	37