Page 34 - Blog
- - April 30, 2014
The 900A is designed to measure hydrostatic pressure in small vessels and cells. Pressure ranges of -200 to +400 millimeters of mercury can be measured with stability and accuracy. The system's sensing element is an electrolyte-filled glass microelectrode with a tip diameter range of 2 to 5 microns. Pressures of electrolyte solutions are measured by maintaining a salt concentration gradient at the tip of the sensing electrode in dynamic equilibrium by applying an equal air pressure inside the microelectrode. The pressure reading appears on the front panel display and via the BNC recorder output. Because the piezo electric pressure controller uses external pressure and vacuum sources, pressures lower than -200 to greater than +400 mm Hg can be quickly and accurately measured at the microelectrode tip.
Now, you can see how to setup your 900A Micropressure system.
Watch how to regulate the pressure and the vacuum for your 900A using a PM015 pressure manometer.
If you...more
- - October 10, 2013
With the development of a High Throughput Screening (HTS) protocol for faster drug discovery, a new line of cell culture filter plates have been introduced by several major cell culture insert manufacturers. These HTS plates normally have either 24 or 96 individual cell culture inserts "bonded" together as one plate so that it can be handled by a robot apparatus. In response to these developments, WPI has developed an automatic REMS system and a manual electrode, STX100, for TEER measurements using HTS plates.
- - October 10, 2013
Transepithelial Electrical Resistance TEER measurements is the most convenient, reliable and non-destructive method for evaluating and monitoring the growth of epithelial tissue cultures in vitro. The confluence of the cellular monolayer is quickly determined by a sharp increase in TEER. TEER measurement technology, which was first introduced by WPI in the mid-1980's, has since been perfected and expanded to include a range of TEER related manual and automatic instrumentation, including:
EVOM² - Manual TEER measurement of epithelial cells in 24- and 96-well plates
REMS AutoSampler - Automated system for High Throughput Screening (HTS) - - October 10, 2013
WPI's EndOhm chambers were designed for making TEER measurement of endothelial cell cultures in individual cups. The EndOhm chambers feature:
Compatible with EVOM²
Improved accuracy of 1-2Ω
Accommodates 6mm, 12mm, 24mm cups and Costar Snapwell cup
Sterilized with EtO, alcohol or a bactericide - - October 02, 2013
See how simple it is to operate the new ATC2000 Animal Temperature Controller. The new adaptive mode takes the guesswork out of temperature control so you can focus on the details of your own experiment.
- - October 02, 2013
WPI surgical instruments were recently featured in a JoVE video that demonstrates a new method for cross pollinating grasses.
Jiang, H., Barbier, H., Brutnell, T. Methods for Performing Crosses in Setaria viridis, a New Model System for the Grasses. J. Vis. Exp. (80), e50527, doi:10.3791/50527 (2013).
- - September 15, 2013
- - September 15, 2013
The PSMB5N Surgical Microscope has a motorized focusing system that allows for hands free operation. It is lightweight, compact and easy to maneuver. Dual bulbs prevent illumination failure during surgery. It has an optional video adapter and five magnification steps. This video shows you how to assemble your microscope.
Safety is a primary concern when setting up equipment. Here are a few pointers.
- This setup requires open space to work in.
- Be sure to remove the packing materials as soon as you unpack your boxes.
- Watch your hands when you are using a box cutter.
- The articulating arm is spring loaded. Be sure to release the tension on it in a controlled manner.
- Be sure to remove all parts from the boxes before you throw the boxes out.
- The base of the microscope is heavy. It requries two people to remove the base from the box. If you drop the base, you will likely break the casters.
- Do not invert the microscope head with the eyepieces in place. They could fall out and are expensive to...more
- - September 02, 2013
WPI now offers suction tweezers that are ideal for picking up small objects with a flat surface. The Pickup Tweezers are perfect for handling and positioning coverslips, removing small tissues from a solution or manipulation of small electronic components. The Pickup Tweezers (#504523) require no power or batteries, and are safe from all electrostatic discharge. This kit includes the metal body (handle), a straight metal needle, an angled metal needle, three rubber cups (4, 6 and 9mm diameter) and a lubricant set. When your fingers are just too big, and standard tweezers are awkward, the Pickup Tweezers are perfect.
- - May 21, 2013
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