The iWorx newsletter is a FREE monthly publication dedicated to sharing teaching laboratory techniques and other useful information with educators in the fields of Anatomy and Physiology. We will also be sending you technical information and info on new developments at iWorx that we feel may be of use to you in your teaching and research activities.

About iWorx
iWorx has everything you need to add excitement and distance learning to any physiology teaching program. Our products include data acquisition hardware, professionally -developed physiology courseware, innovative web tools, and a full selection of transducers, cables, front ends and accessories.

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January 2006

iWorx Launches Commerce Web Site

We are pleased to announce the launch of our new e-commerce Web site for data acquisition and analysis solutions for the life sciences.  Please visit us at www.iworx.com.  Customers in the U.S. and Canada can now purchase many of our physiology teaching products and replacement components directly online.

Special offer:  Get free shipping for any online purchases over $50 until April 30, 2006.
 

Experiment: Carbon Dioxide Fixation in Intact Cells

In this month's experiment, the amount of carbon dioxide consumed during photosynthesis is measured in the presence and absence of light and chemical reagents.  The reactions that fix carbon dioxide into sugars take place during the portion of photosynthetic process known as the Calvin Cycle.  The chemical agents used in this experiment affect either the light-driven reactions that produce high-energy molecules used in the Calvin Cycle, or the enzymes involved in assembly of the sugar molecules during the cycle. 

The consumption of carbon dioxide by intact cells, during photosynthesis, is quantified by measuring the production of oxygen with a polarograph.  Since one molecule of oxygen is produced for every molecule of carbon dioxide consumed, it is easy to determine the amount of carbon dioxide consumed by using an ISE-730 dissolved oxygen electrode, a DO2-100 current to voltage adapter that converts the output of the ISE-730 to measure any changes in oxygen concentration of the chamber.

Download high resolution, press optimized carbon dioxide fixation in intact cells experiment (PDF file). 

Download low resolution, screen optimized carbon dioxide fixation in intact cells experiment (PDF file).

Tech Notes: The RPC-100 Respiration/Photosynthesis Chamber, the ISE-730 Oxygen Electrode, and the DO2-100 Current to Voltage Adapter

The RPC-100 is a reaction chamber designed for studying cellular respiration or photosynthesis.  The chamber is filled with a mixture of cells or cell fractions, buffers, and reagents that react to either consume or produce oxygen.  The amounts and rates of oxygen, either consumed or produced, are measured using an ISE-730 oxygen electrode placed in the chamber.  A DO2 adapter that also amplifies the output of the electrode converts the current output of the electrode to a voltage.  

Learn more about the RPC-100 from this tech note.  Learn more about the ISE-730 and the DO2 from this tech note.

For a limited time, iWorx is offering its customers a 30% discount on purchase of the RPC-100 Respiration/Photosynthesis Chamber, ISE-730 Oxygen Electrode, and the D02-100 Current to Voltage Adapter.

RPC-100

Respiration/Photosynthesis Chamber

$250

$175

ISE-730

Oxygen Electrode

$510

$355

DO2

Current to Voltage Adapter

$100

 $70

Download: Settings for the Experiment on Carbon Dioxide Fixation and Other Experiments in the iWorx Newsletter

If you plan to use any of the experiments or manuals announced in recent editions of the iWorx Newsletter, you should obtain a copy of the settings group used to configure LabScribe for these experiments.  Click here to download copies of the settings groups for the experiments or manuals announced since May 2004.  Once you have a copy of the settings group, just drop the group into the LabScribe folder on your hard drive, and use the Settings menu to load the group and a list of its experiments.

Download copies of the settings groups for the experiments announced since May 2004. 

Web Resources

In this month’s experiment, the fixation of carbon dioxide during photosynthesis is studied.  Learn more about the Calvin cycle from external Web sources here.

On this page we have also accumulated a host of links to informative, external physiology Web sites and conveniently categorized them into major sub categories for easy reference.

Clearance Items

iWorx has a large supply of new and trade-in items at up to 70% discount.  Also check with us about trade in allowances for your older Powerlab or Biopac equipment.  Customers in the U.S. and Canada can order directly online. See specials