CSC Scientific Blog

A blog about test equipment

Cho Jang

Sales Support Administrator at CSC Scientific
Find me on:

Recent Posts

Understanding the Role of Platinum in Du Nouy Tensiometer Rings

Posted by Cho Jang on Aug 12, 2024 5:53:51 PM

Discover the significance of platinum in du Nouy Tensiometer Rings and its impact on accurate surface tension measurements.

Read More

Topics: duNouy Rings, Surface Tension, interfacial surface tension, tensiometers, du Nouy tensiometer, water content measurement, walk on water, segmentation

Instrument Accuracy?  Is it only an illusion?

Posted by Cho Jang on Aug 12, 2024 4:57:22 PM

Regularly I’m asked the question; “How accurate is this moisture balance?”

The questioner asks for the answer in terms of percent (%) moisture. When I answer “it depends”, I always get the unspoken response, “Why did I ask this stupid idiot?

Absolute Measurement

When inquiring about the precision of measurements such as weight or temperature, the responses are clear-cut and tied to the accuracy of the instruments. For instance, 25 grams or 50 degrees with a margin of plus or minus (+/-) 0.1 gram or 1/2 degree.

Percent is A Relative Measurement

 

When questioning the accuracy of your percentage reading, the answer can be quite complex. This complexity arises from the fact that percentage (%) is a relative measurement. Take, for example, the outcome of a Loss on Drying (LOD) moisture test, which is heavily influenced by the size of the sample used.

To better grasp this concept, consider how the result of an LOD moisture test is derived. It involves subtracting the weight of the sample at the end of the test from its initial weight, and then dividing this difference by the original weight of the sample. This calculation ultimately yields a % moisture reading.

Sample Size

The upcoming analysis will shed light on the impact of both sample size and instrument precision. We will delve into a sample containing 23.5% moisture, examined using an electronic LOD moisture balance with a sensitivity of 0.001 grams and a repeatability of +/- 0.005 grams.

Sample Analysis

Read More

Topics: Moisture Analysis, Moisture Testing, CSC Digital Moisture Balance, Loss-On-Drying, Moisture, moisture balance, instrument accuracy

"Certify vs. Calibrate Sieves: Which Should You Do?"

Posted by Cho Jang on Jun 21, 2024 5:25:13 PM

The ongoing debate between the value of a sieve certification process and sieve calibration has long intrigued me.

Read More

Topics: Sieve Shakers, Mid-Point Sieves, Particle Size Analysis, Sieve Calibration, Sieve Testing, Sieves

Static Electricity and Sieves: No Problem -- Maybe

Posted by Cho Jang on Jun 21, 2024 4:29:21 PM

I'm sure many of you have felt the jolt of static electricity when walking on a cozy wool rug in the winter and then reaching for a metal door knob. This same static electricity can cause chaos in your sieving process.

Read More

Topics: Sieve Blinding, Agglomeration, Sieve Testing, Sieves, Particle Size Test, electro static

Evolution of Sieve Testing: Ancient Egyptian Ways to Modern Methods

Posted by Cho Jang on Jun 20, 2024 5:25:03 PM

Read More

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

The Importance of Food Texture Analysis: Enhancing Sensory Experience

Posted by Cho Jang on Apr 25, 2024 4:36:13 PM

While savoring a delicious meal, the age-old saying "It's all about the taste, not the appearance" often resonates. The visual aspect simply enhances the overall flavor experience. When a dish both looks and tastes exceptional, diners are quick to give it high praise.

Food purchasers and food manufacturers understand that taste isn't the only factor at play. If a food product lacks the right feel or appeal, the initial bite may also be the final one. They require an objective measure of these sensory aspects that is both consistent and reproducible. These sensory aspects fall into a category called texture.

Read More

Topics: Texture Analysis

Understanding Surface and Interfacial Tension in Liquids

Posted by Cho Jang on Apr 5, 2024 6:10:28 PM

I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer

Read More

Topics: Surface Tension Measurement, Surface Tension, interfacial tension, interfacial surface tension, surface Tension Testing, du Nouy Ring Method, du Nouy tensiometer, Liquid Properties

Why do You Need a Sieve Shaker?

Posted by Cho Jang on Apr 5, 2024 3:25:37 PM

 

Read More

Topics: Sieve Shakers, "Ask Art", Sonic Sifter, Agglomeration, Particle Size Analysis, Sieve Testing, Sieves, Sieving Process, Sieve Analysis, Quiet sieve shakers, sieve shaker

Texture Analysis: Key to a Perfect Bite

Posted by Cho Jang on Jun 21, 2023 1:12:51 PM

 Texture Analysis is a door into rooms where we evaluate things by the way they feel.

Read More

Topics: Texture Analysis

Subscribe via E-mail

Search the Blog

Most Popular Posts

Posts by Topic