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Lab Supplies
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August 05, 2014
Micro4™ from World Precision Instruments is an easy-to-use but very capable controller for WPI's Nanoliter Injector and UMP3 UltraMicropPump.
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October 03, 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.
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May 22, 2013
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May 01, 2013
Surgical Loupes help to alleviate eye strain by enlarging the image when you are working on tiny subjects or conducting precision operations. They are portable and easier to use than a surgical microscope. However, they are not created equal, and choosing the pair that's right for you is important to your satisfaction.
Factors Involved in Choosing Loupes
Choosing the correct surgical loupes for your application involves several factors, including resolution, working distance, field of view, depth of field, magnific
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May 01, 2013
The barbed tubing assortment kit contains over 250 items. All the items are pictured on a grid below. The darker lines in the image grid represent centimeters, and the smaller ones are 2.5 mm apart.
...moreLuer to Tubing Coupler Assortment Kit P/N 504955 (Nylon)
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May 01, 2013
The Nanoliter injector is a micro-processor controlled injection system that uses direct piston displacement. The collet assembly (exploded view) is shown in the image below. The glass pipette fits into the white, plastic sleeve (spacer). When the collet is screwed in place securely, the black rubber washers are compressed and hold the glass firmly in place.
Nanoliter 2000
A side view of the assembled Nanoliter injector is shown below.
Nanoliter 2010
As the plunger is depressed, it pushes into the glass to expel the liquid in the pipette. Eventually, the diameter of the plunger matches that...more
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May 01, 2013
Order code Description DMF1000 Description: Complete Microforge System; includes Programmable Digital Controller and Microscope Application: Fabrication of special shapes of glass micropipettes. -
April 30, 2013
Use the table below to compare WPI and Bovie part numbers.
Order code Bovie P/N Description 500384 AB03 Micro Bur Handle, 1225 rpm 500385 AB04 Micro Burr Handle, 1225 rpm -
April 30, 2013
Two-barrel, 3-barrel, 5-barrel and 7-barrel glass capillaries are available at WPI.
Multi-barrel configurations are designed especially for microiontophoresis. Because the capillaries are fused together during manufacturing, you will not need to twist them while pulling to seal the tips together. An inner filament in each barrel makes filling easy and fast.
Multi-Barrel Borosilicate Glass Tubing with Filaments
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April 30, 2013
- Flexible Teflon microprobes are used for implantation in tissue, in spectrophotometer cuvettes, rectally in neonatal mice, in water baths, PCR thermal cyclers, etc.
- Animal rectal temperatures during surgical procedures and pyrogen testing.
- Skin temperature measurement during exercise physiology studies.
When precise temperature measurements are required, WPI can provide you with a very accurate monitor and thermocouple microprobes. WPI monitors have both resolution and accuracy of 0.1°C in the 0-50°C range and are traceable to NIST standards, whereas, other competitive electronic thermometers have an accuracy that is usually to 0.5°C or worse. Furthermore, all our type T clinical probes are guaranteed accurate to 0.1°C, due to our stringent wire standards. These are five times more accurate than competitive probes made with regular “Special Limits” wire.
Probe Sterilization Methods:
The needle microprobes and animal rectal probes are...more
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April 29, 2013
These instructions describe how to properly focus a binocular microscope.
- Turn on the lamp and adjust its intensity.
- Adjust the interpupilary distance so that the two circles of light merge into one.
- Place a sample on the stage.
- Select the 10X objective and look through the right eyepiece only.
- Use the coarse and fine focus control knobs to adjust the focus of the sample.
- When the sample is clearly visible, use only your left eye. Do NOT adjust the focus knobs. Instead, adjust the diopter on the left eyepiece until the sample comes clearly into view. The image should be clear with both eyes open.
- Choose the desired objective. You may need to adjust the fine focus a little.
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April 29, 2013
NOTE: For an introduction to microscopes, see Microscope Basics.
A variety of microscope objectives are available. All objectives use lenses to focus light. Light is broken down into various wavelengths (colors) as it travels through a lens. The various wavelengths have different focal points. That means that red, green and blue appears to focus at different points. This is called chromatic aberration. Spherical aberrations are...more
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April 29, 2013
Microscopes are a standard laboratory tool, but purchasing the right microscope for a particular application can be a challenge. First, consider how you will use the instrument. Are you looking at slides, dissecting a small animal or performing a surgery? (The application dictates the necessary working distance and power of magnification.) What kind of a stand will you be using? (Boom stand, articulating arm or post stand) Will the microscope be used in a classroom setting? (A trinocular scope offers the option of including a camera.) Will you need a camera? (A camera allows you to project the microscope...more
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April 29, 2013
WPI offers a wide spectrum of high-quality glass capillaries. We take pride in our ability to ship your glass order within 48 hours. If you need a special glass that does not appear in our catalog, please call us. We will make every effort to provide it for you.
Fire-Polished glass capillaries are easier to insert into microelectrode holders without damaging the gasket. More importantly, fire-polished glass won’t scratch the chloridized wire used in a recording electrode. Fire-polishing does not affect the glass’s mechanical or electrical properties.
Borosilicate glass capillaries: Close dimensional tolerances assure...more
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April 29, 2013
When it comes to setting up microinjection systems, the options appear endless. The pictures below give some broad suggestions on how you might set up your own system. Keep in mind that many parts are interchangeable depending on your needs or preferences.
In general, you will need a stereo microscope on a stand, a light source, one or two micromanipulators with stands, and one or two injection systems. The following images show various setups for microinjection, and all the WPI part numbers are included for easy reference.
Remember, when you set up your own system, choose the parts that fit your needs. For example: