CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

Static Electricity and Sieves: No Problem -- Maybe

Posted by Art Gatenby on Apr 21, 2010 2:02:00 PM

I'll bet that most of you have experienced the shock of walking on a thick wool rug on a dry winter's day and getting zapped out of your reverie when reaching for the metal door knob.


The same process of static electricity generation can play havoc with your sieving process.

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Topics: Sieve Blinding, Agglomeration, Sieve Testing, Sieves

Is My Test Equipment Lying?

Posted by Art Gatenby on Mar 9, 2010 4:45:00 PM

I keep running into this kind of thing.

There is a recurring question we are asked as instrument manufacturers:

"Is my equipment working OK?"

This is of particular concern when a production process seems to be off standard.

QC says: "Clearly Process Problems"

Production says: "Bad Test Results"

These challenges arise often.

What to do?

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Topics: Surface Tension

Re-Certify Mid-Point Sieves? When and How?

Posted by Art Gatenby on Jan 29, 2010 12:24:00 PM

I recently had a long conversation with the person [we'll call him Bill] responsible for setting up the quality procedures for very tight specifications in a new process -- part of which was developing procedures for checking the ongoing tolerances of production sieves.
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Topics: Mid-Point Sieves, Sieve Calibration, Sieve Testing, Sieves

Is Your Moisture Test Result Really Moisture?

Posted by Art Gatenby on Jan 11, 2010 11:22:00 AM

Most of us think about measuring moisture by...

  1. Drying the material and measure the weight loss 
  2. Using a calibration and electronic instrument 
  3. Using a titration method such as Karl Fischer

When using these processes, we take for granted that the results will be the product's actual moisture.

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Topics: Moisture Oven Test, Infrared Moisture, Moisture Analysis, Moisture Testing, Karl Fischer Titration, Loss-On-Drying

New ASTM E11-09 Sieve Standards — Exciting or Just Dull ???

Posted by Art Gatenby on Oct 6, 2009 5:42:00 PM

I have often ranted about the limited range of ASTM 11 sieve mesh standards as it relates to individual sieve certification. We at CSC have tried to help clearly distinguish between different levels of inspection and/or degrees of conformity. We outlined three levels of sieve certification. These are working sieves, mesh certified sieves and mid point sieves. There are summary definitions of these categories on the CSC Web site.

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Topics: Sieve Shakers, Particle Size Analysis

Walk On Water ??? Really ???

Posted by Art Gatenby on Sep 10, 2009 4:31:00 PM

Yes you can walk on water withSurface Tension.

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Topics: Surface Tension Measurement, tensiometers, surface tension instruments, surface tension analysis, walk on water

Bostwick Consistometer – Incline or Not

Posted by Art Gatenby on Aug 27, 2009 12:16:00 PM

The Bostwick Consistometer is used all over the World to check the quality of sauces and condiments. In our in-house training session we do blind product tests and clearly define the differences between brand of ketchup and mustard. This is a testament to the value placed on Bostwick Consistometer tests by the top food manufacturers.

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Topics: Bostwick Consistometer, Liquid Properties

It Was Still Running

Posted by Art Gatenby on Aug 17, 2009 1:26:00 PM

As part of our line of moisture measurement instruments, we produce a Karl Fischer titrator, We call it the Aquapal. The heart of the Aquapal is a series sophisticated electronics. Its purpose is to measure small amounts of moisture.

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Topics: Karl Fischer, Moisture

Who Cares About Sieve Testing ?

Posted by Art Gatenby on Jun 8, 2009 4:50:00 PM

In one of my more contemplative moments, I thought a bit of history about particle size analysis would be of interest. So let’s see Who Cares About Sieve Testing.

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Topics: Sieve Shakers, Particle Size Analysis, test sieve equipment, sieve mesh

Karl Fischer Titration – Defined? or Over Simplified?

Posted by Art Gatenby on Jan 19, 2009 4:42:00 PM

Often I’m asked “What is Karl Fischer titration?” I’m always somewhat reticent to answer. If I can’t quickly change the subject I revert to a simple explanation, that even I (being somewhat challenged as a chemist) can understand. The explanation seems to help the novice understand Karl Fischer.

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Topics: Coulometric Karl Fischer, Volumetric Karl Fischer, Karl Fischer, Karl Fischer Titration, Moisture

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