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Particle Size Distribution (Alpine Granulation) Test

  • 43 per sieve
  • |
  • 7-9 Business days
  • |
  • Rush Available
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Particle Size Distribution (Alpine Granulation) Test

Technical data sheet


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.

Acceptable matrices

Powders and particulates

Unacceptable matrices

Liquids, particle sizes > 37 micrometers


Alpine Air Jet Sieve

Method reference

Internally Developed Method

Reportable unit

% retained on each sieve

Sample size requirements

25 grams

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
*Prices and offerings are subject to change without notice.

Common Particle Size Distribution (Alpine Granulation) Test Testing Questions

While our sales and customer service team are happy to answer general testing questions, consultations typically start at a rate of $250 per 30 minutes regarding the interpretation of reported test results or questions about our test methods. We cannot consult on regulations, tolerance limits, or claims.

We make every effort to keep our methods and detection limits up to date according to the latest standards and qualifications. If you have any questions regarding the limit of detection/quantification or method references, please contact our Customer Service team at 1-800-245-5615.

Our standard turnaround time is 10 business days for most assays. There are some assays that require a longer turnaround time. We also offer a RUSH service that is half the time of the standard turnaround time of the assay at double the cost of the assay. A few assays that we provide cannot be rushed due to the nature of the test. Please check the specific assay you are interested in regarding the ability to RUSH the turnaround time.

Medallion Labs, a division of General Mills, offers multiple areas of expertise for analytical testing and product evaluation for the food and ingredient industry. Our areas of expertise include Chemical Analysis, Nutritional Analysis, Food Safety, Shelf Life Studies, Microbiology, Specialty Fibers, Physical Testing, Allergen Testing, as well as Product Evaluation (which includes Product Performance and Sensory Evaluation) and Technical Consulting/Method Development. Our methods are developed for the testing of food products and ingredients.

The Alpine Granulation Particle Size test uses and air jet to lift particles, then uses a vacuum to draw them back down and through the sieve. This is really useful for stickier samples, or if the sample tends to clump. The Rotap test uses tapping action to move the particles through sieves.

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Medallion Labs

A food testing program designed with mid-market and enterprise food and ingredient manufacturers in mind.