Tritech Research has designed a microinjection system that lets you control with exacting precision both the pressure and the duration of the microinjection pulse. And, it's available at a fraction of the cost of competing systems.

Our microINJECTOR™ System uses a precision pressure regulator and a high-speed electronic solenoid switching valve, yet it is amazingly robust and simple to operate. It allows you to start and stop injection within a fraction of a second and control the quantity and flow of material into your target with precision. Our electronic foot control is designed to keep your hands free so you can concentrate on the manipulation of your needle and target.

The microINJECTOR comes preassembled, ready to use. You need only attach the system to a compressed gas tank (e.g. N₂) or in-house pressurized air line at one end and your needle at the other. You set the desired pressure and the system delivers pulses of pressure to your needle. In the base model, the duration of the injection pulse is controlled by how long you hold down the high-speed electronic foot pedal. With our easy-to-use, reliable equipment there is no "magic" required. Even a novice will be turning out transformants the first day.

With our optional electronic Pulse-Length Control Module (PCM) you can set injection times from 0.1 to 10 seconds. Each time the pedal is pressed, a constant volume is reproducibly injected. This option is crucial for quantitative experiments such as transient expression assays following microinjection of DNA, RNA, protein or other substances.

By controlling the pulse length and pressure independently, you can compensate for the flow characteristics of individual needles; you can determine if the needle is properly placed prior to any appreciable damage occurring to your target; and you can fill your target incrementally. High pressure settings with rapid on/off pulses aid in unclogging needles.

As an added option to the microINJECTOR System you can hold your target with our state-of-the art Holding Pipette Controller (HPC)The HPC allows you to pick-up and hold your target with vacuum suction then release it with positive pressure. Our unique pneumatic foot pedal control allows a continuous range from vacuum through positive pressure depending on the position of the pedal. Ideal for holding and manipulating targets such as embryos and oocytes. Also useful for injecting ES cells into Blastocysts. As any of our customers will attest, within a short time you will be proficiently getting transformants.

In basic microinjection, the needle is either at a user-set pressure when injecting, or at atmospheric pressure when not injecting. In some cases, backflow of cytoplasm or medium into the needle can be problematic. For these cases, a lower "holding pressure" that is lower than the injecting pressure, but higher than atmospheric pressure is useful between injections. A holding pressure can also reduce needle clogging. No matter how careful a person is, needles occasionally do clog. For these cases, a short blast of a "clearing pressure," higher than the normal injection pressure, is useful to unclog the needles. The MINJ-D employs a user-friendly microprocessor to digitally synthesize injecting, holding and clearing pressures, as well as injection durations reproducibly. Using a simple "Menu" button, and Up and Down buttons, anyone can set the pressures and the injection duration in seconds. It's so intuitive, you won't have to read the directions! Here are the key features and specifications of the Digital microINJECTOR™:

• Most compact on the market

6" x 7" x 3" and weighs under 2 lbs.
(15cm x 17cm x 7cm and weighs under 1 kg)
• Fast response time between pressures (~100 milliseconds)
• Simple 3-button control
• Digital display with backlight for easy reading
• Microprocessor accuracy
• Foot pedal included for hands-free injection control
• Pressure range (applies to each of holding, injecting and clearing pressures): 0 - 100 psi
• Programmable Injection Duration: 0.1 - 999.0 seconds
• Built-in Vacuum Generator can be used to front-fill needles by aspiration
• Manual Injection Mode
• Injection Data-logging Port for optional computer interface
• Injection Control Port for optional computer control

• Most compact and robust on the market
• 6" x 7" x 3" and weighs under 2 lbs.
• (15cm x 17cm x 7cm and weighs under 1 kg)
• Simple 3-button control
• Digital display with backlight for easy reading
• Microprocessor accuracy
• Foot pedal included for hands-free injection control
• Total syringe volume: 100uL
• Programmable Injection volume: 0.000 - 25.000uL
• Programmable Injection speed: 0.4 - 25.0s/uL
• Programmable Agitation volume: 0.1 - 25.0uL
• Programmable Agitation speed: 0.3 - 25.0s/uL
• Manual Injection Mode

Tritech Research is pleased to offer a fantastic, complete Dissecting Stereo-microscope System for thousands of dollars less than any competing system.

You are probably used to seeing Stereo-microscopes priced in the $3000-$7000 range. Remarkably, we are offering a system with high-quality optics, equal to the best microscopes, at an unequaled low price! This model is an update to the Wild-M5a "clones" that we have been selling for years. It has the same optics with a more modern look and a more ergonomic base. The expert optics and mechanics of our system will let you see all the fine details of your specimens with the utmost clarity.



Each system includes all of the following:

• 1 Stereo-microscope body
• 1 Integrated Power Supply and lighting system to control brightness of both trans and incidental illuminators
• Trans (through), incident or simultaneous illumination
• 1 Frosted Glass and 1 Black & White Plate for the base

At our incredible price, order three for the price of one of our competitors' scopes. If you are not fully satisfied, we have a 30-day money back guarantee (MBG only applies to one scope, so if you are not sure, order one scope to prove it works for your application, and we will still honor all quantity discounts when you order more within 30 days). One full year replacement warranty for manufacturing defects.

This system meets all your Dissecting Microscope needs. The magnification changer ring allows you to switch between 6x, 12x, 25x, 50x magnification of the Eyepiece/Objective combination with the turn of your fingers. The lenses are ground and mounted so precisely that it is seldom necessary to re-focus when switching from one magnification to another. Illumination from above is ideal for micro-surgery, dissection, Drosophila and plant genetics, while illumination from below is ideal for Nematode and fungal genetics and micromanipulation.

Click one of the following to select the digital camera you have:

Digital Camera Mounting Adapter for Canon, Fuji, Kodak, Olympus, Sony, Coolpix 5700

Digital Camera Mounting Adapter for Nikon Coolpix 5400