Automatic Titrator with Mini Sample Changer Video

By Hank Levi on Tue, Nov 20, 2012 @ 11:11 AM

AT-700 Automatic Titrator

The AT-700 automatic titrator provides operators a variety of choices including the use of an Mini Sample Changer CHA-700integrated mini sample changer.  The mini sample changer can hold up to 6 samples.  The design utilizes a rotating arm that holds the electrode(s), dispensing nozzle(s), and propeller stirrer above each sample and maneuvers from sample to sample.  The compact design allows a small footprint on the bench because the titrator sits on top of the sample changer.  Watch the short demo video to learn more about this titration system.

 

        Get more information here 

 

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Automatic Titrator AT-700

By Hank Levi on Mon, Nov 05, 2012 @ 02:31 PM

Automatic Titrator AT-700

The AT-700 automatic titrator is a new compact potentiometric titrator.  The unit is ideal for conducting basic end-point titrations all the way up to more complex configurations that can include a sample changer, an additional permanent burette, to a chain of 8 automatic piston burettes (APBs).  The titrator can work stand alone or pair with advanced computer controlled software. 

Watch the video to learn and see more.

 

 

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About Scientificgear

By Hank Levi on Fri, Aug 31, 2012 @ 10:20 AM

describe the image

Scientificgear LLC provides several targeted areas of service including:

  • Karl Fischer Moisture Titration
  • Titration
  • Surface Tension (Tensiometers and Du Nouy Rings)
  • Contact Angle Analyzers for surface analysis
  • Thermal instruments (WBGT, Conductivity, Heat Flow)
  • Liquid Density Instruments (Benchtop and handheld)
  • Refractometers, Brix Meters

We support companies and organizations in select industries by providing:

  • Technical Support
  • Sales of Instruments
  • In-house and field repair service on select instruments
  • Calibration Service
  • Training and Installation
  • Some in-house testing
  • Manufacture and repair of Du Nouy Rings

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WBGT practice policy for heat and humidity

By Hank Levi on Thu, Jun 21, 2012 @ 02:39 PM

WBGT MeterMost of us know about the Heat Index (HI) and might have even seen a sling psychrometer used by a coach or trainer.   How heat measurements were taken before tended to limit the amount of measurements taken due to the separate actions required to determine humidity levels and related temperature readings along with other factors. A confusing process.  In many cases measurements were done before and after a practice session - and that was it.

Trying to determine how hot it is and how dangerous the environmental factors are has been a concern for a long time. As with most things we find improved ways of accomplishing tasks that were previosuly cumbersome or difficult.  What we are seeing now is the emerging use of a different method.  The WBGT or Wet Bulb Globe Temperature.  This method while not new has some benefits. 

The WBGT meter can be deployed continuously measuring the environmental conditions non-stop, during a practice for example.  If conditions become dangerous during practice actions can be taken.  In particular, the WBGT Meter HD32 is a reliable hand-held wbgt meter that uses replaceable sensors.This is a very nice feature because in the past most people had to send in their entire instrument if they wanted it calibrated.  A costly and timely process.  We believe the removable sensors will  change the way calibrations are viewed.  Users will now be able to replace just the sensors and even have back ups available for use. 

You can watch the video below that shows the WBGT Meter HD32 and how it is unpacked and assembled.  The video also describes and shows some of the other features of the WBGT HD32.

This video demonstrates how to unpack and assemble the WBGT HD32.2. It also discusses some of the key features of this hand-held WBGT Meter.


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How to test for Salt during food production

By Hank Levi on Mon, Oct 31, 2011 @ 12:53 PM

SaltMany companies produce the foods we eat.  Do you ever wonder why or how they test for salt during the production process?

Examples by Manufacturing Type

Frozen Vegetable Processor

The salt content of the blanching water is important for maintaining the bright colors of vegetables

A Condiment Manufacturer

Testing Sauces and dressings

A Cheese Maker

Measure the salinity of saltwater that the cheese is soaked in

A Potato Chips Manufacturer

Checking for salt sprinkled on fried potato slices

A fresh Cut Fruit Processor

Use a 2% saline solution with a small amount of ascorbic acid to prevent discoloration of fruits

A Deli Food Supplier

Measure foods with a salt meter vs. by taste

A Canned Food Manufacturing Plant

Measure the brine for canned tuna

A Pickles Manufacturer

Measure the salinity of the brine for salt-packed products

A Cold Cut Meat Manufacturer

Measure salt concentration of ham and deli slices

A Baker

Measure and monitor the salinity of bread dough to around 1%-2%

 

 

 

Salt which is made up of 40% sodium and 60% Chloride is an important ingredient found in food.  While salt can make food taste better, control color, and maintain food texture, it is also considered a health-risk factor (mostly due to the sodium).  Measuring and controlling the levels of salt between the extremes is a constant battle.  Producers of processed foods generally have the biggest need for identifying and controlling salt levels to address not only the taste, color, and texture of foods but also to address some of the healthier eating lifestyles more and more consumers are demanding.

For these reasons it is paramount that salt is measured accurately.  So how do we do that?

Food comes in a variety of forms.  Solid, Liquids, pastes, creams, pieces, chunks, wafers, crackers, gooey, sauces, liquids with chunks in them...let's see what else..Anyway, you get the idea.  There are a lot of ways food can be produced and consumed!

So what device or devices can we use to measure the salt found in these numerous forms of processed foods?

Well, there are a number of "salt meters" out there that can measure salt.  However, not all salt meters can measure the particular salt you are looking for in the same way.  In fact some "salt meters" can only measure salt under certain conditions and or in certain substances like water or sea water.  For this reason it is important to first consider what your going to be testing.  For example, If your food sample includes "food stuff particles" that you can grind into a paste form, then you can probably use a salt meter that utilizes the conductivity method.  On the other hand if you have a brine that you immerse food into and your only concerned with the liquid then perhaps a different salt meter will work.  

The point is this.  The form of the food at the instant you are going to perform the test is key.  Many types of foods can be formed into pastes and diluted with water.  If the food you need to test is like this then a simple salt meter utilizing the conductivity method may be able to perform the test to your satisfaction.  I say may because % salt levels and other accuracy factors may require that you use an entirely different method of titration known as silver nitrate titration instead.

Salt Meter vs. Titration?

describe the image               Titrator

A brief explanation and description of the two measurement approaches:

The Mohr method, also known as a silver nitrate titration method, utilizes the characteristics of silver nitrate that reacts with chloride ions to measure the salinity %. 

Created on 10/31/11 at 10:37:41

Conversley, some of the more popular salt meters emloy the electric conductivity method.  Both methods measure the salinity but operate on different measurement principles.  However, by creating a conversion table between the two testing methods, correlation between the set of results can be seen.

Created on 10/31/11 at 10:41:32  

Aside from the measurement capabilities of each approach there are pros and cons to each.

 
 Pro's and Con's

 

Salt Meter

Titration

 Measurement Range

Less..maybe

More

 Accuracy

Less

 More

 Ease of Use

More

 Less

 Time to test

Less

 More

 Cost

 Less

 More

 

 

 

 

 

 

 

 

 

 

 

 

 

While each method has benefits we have recently found through some informal surveying that some food processors are choosing to use both methods.  These companies are finding that it is easier to use the hand held devices and perform quick spot checks on the production line.  If any problems are identified on the production line then further verification and testing can be performed using the titration approach.  Some think using this collaborative approach is ideal.smiley2

 

ALSO READ OUR MOST RECENT UPDATES TO THIS BLOG POST : Salt related posts

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WBGT and Washington State Safety

By Hank Levi on Tue, Aug 02, 2011 @ 02:40 PM

washingtonstate resized 600On July 5th, 2008, a workplace rule designed to protect workers from outdoor heat exposure took effect in Washington State. This rule was passed on June 4 after six public hearings were conducted on heat stress and its causes. The hearings confirmed what officials already knew: working outside in hot weather is a health hazard.  The three requirements for employers with employees who work outside are to:

·  Train employees and supervisors to recognize heat-related illness and what to do if someone has symptoms.

·  On days when temperatures require preventive measures, increase the volume of water available to employees.

·  Have the ability to appropriately respond to any employee with symptoms of illness.

 

It's now 3 years later...would a handheld WBGT Meter be a helpful tool?...

 

The Wet Bulb Globe Temperature (WBGT Handheld meter) is a tool perfectly suited to helping Washington State employers comply with this new law. This hand-held tool is used to estimate the effect of temperature, humidity, and solar radiation on humans and determine appropriate exposure levels to high temperatures. A WBGT index is commonly used as a guide for environmental heat stress to prevent heat stroke during physical exercise or while at work. Based on the index shown, employers can estimate the probability that a heat-related illness with occur and provide the appropriate amount of water available for the current weather conditions. See a video demonstrating the use of the WBGT103 below.

 

For more information on the new Washington State law, go to: http://www.lni.wa.gov/safety/topics/atoz/heatstress/default.asp

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Sneak Peak at new Potentiometric Titrator AT-700!

By Hank Levi on Mon, May 09, 2011 @ 11:44 AM

Potentiometric Titrator AT-700
















 

 

 

 

 

Here it is!  The new AT-700 Potentiometric Titrator with integrated sample changer, CHA-700, is coming out soon.  Manufactured by Kyoto Electronics Manufacturing (KEM) this will mark their 7th generation of industrial grade, high quality, titration instrumentation.  We have not yet received all of the details on this amazing looking, newly designed potentiometric titrator but can tell you that it incorporates a carousel design sample changer that handles eight samples.  From the photo you can see how the sample changer's compact design revolves around the Potentiometric Titrator.  There are a few key design features on the new potentiometric titrator:

  • No need to read measurement parameters
  • New burette system
  • All-in-one compact design

We're told this new design will make significant improvements with the measurement of Mercaptans down to 1PPM (ASTMD3227,UOP163,IP272).

*Advantages include a special sealing cell and electrodes to avoid oxidization of mercaptan sulfer under atmospheric conditions.

*Application: Determination of mercaptan sulfer and hydrogen sulfide in fuels and liquid petroleum gases (LPG) is one of the important applications in petroleum and gas analysis.

We anticipate this newly designed Potentiometric Titrator will serve many other titration applications and provide operators with a compact yet fully automated functioning titrator.

As we receive more information on this new titration system we will let you know.

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