Articles by Hank Levi
A Word About Karl Fischer Water Standards
Some operators use Karl Fischer water standards daily while others do so sparingly. Regardless of the type of operator you are, there still seems to be some confusion about …
Most people know about Karl Fisher as a method for determining moisture content. After that there seems to be confusion when the words “Coulometric” and “Volumetric” are mentioned. It goes something like this:
Novice: “Hi, I …
I wasn’t sure if the RX-5000i digital benchtop refractometer was going to be something really special or just a face-lift. As it turns out there are some pretty cool features that may attract some …
Yes you can! We recently began introducing these capabilities with the DY500 and DY700 Digital Tensiometers. These tensiometers come standard with wilhelmy plates and are computer controlled. Nice software that gives …
CSC Scientific Introduces Automatic Tensiometers –Now Computer Controlled Surface Tension Measurements For Liquids and Powders CSC Scientific Company, a manufacturer and distributor of surface tension measurement products, introduces a new product line of fully Automatic …
Wrestling is a sport where weight classes are established to better match athletes by size. Competition can be fierce within weight classes. Sometimes athletes move up and down between weight classes to better compete …
I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer and the other simply a tensiometer. The plain tensiometer works only with an upward pull and the interfacial works with both an upward pull as well as a downward push. Before I get to my question a couple of definition might be useful
“Calibrating” a Karl Fischer titrator is somewhat of a misnomer. What most operators are attempting to do is determine whether their Karl Fisher titrator is measuring moisture accurately.
A simple method is …
On a regular basis 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?”
The detailed answer is complicated because the questioners want to know accuracy in terms of a percentage (%). This is a relative rather than an absolute measurement term. In the case of a Loss on Drying (LOD) moisture instrument it depends on the size of the sample.
We get this question a lot. How do you test for moisture if the sample is in either liquid or solid form?
Well basically, moisture testing using the karl fischer method is a standard in the …
When people test for moisture content they generally refer to their results in either %, decimal point, or PPM. It can get kind of confusing to say the least. However, it’s really not that complicated …
Surface tension is a property of the surface of a liquid that causes it to behave as an elastic sheet. It allows insects, such as the water strider to walk on water. It allows small …
Posted Wednesday, April 30, 2008
We are always on the lookout for people who can use the technology we have to offer and I came across a very interesting forum where users discovered a way to …
While we generally tell people it stands for Wet Bulb Globe Temperature…it seems that explanation falls short. A more complete answer involves understanding how this all started with the US military utilizing several methods to …
