Automated switching of perfusion solutions
The timely control of a sequence of several different perfusion solutions to a preparation can be a very difficult task. Manually handling stopcocks can cause unwanted electrical artifacts and vibrations. The PS1 is a programmable system that allows unattended solution switching. Stopcocks are replaced by solenoid valves to avoid vibrations during solution changes and the use of low noise circuitry prevents interference in the recordings.
- Unattended solution switching
- Increased reproducibility
- Pinch & Teflon™ Valves
- Manual and external valve control
Valve switching is accurate to 0.01 seconds with programs up to 99 hours long under microprocessor control. Consistent liquid delivery means better data. Choose between speed, cost, and ease of cleaning. Several options are available for fittings and reservoirs. Flexible design, easy cleaning and calibration. Slave mode valve operation controlled by your computer, using available programs.
Perfusion systems include controller, valves, 140 ml syringe reservoirs and drippers (or 35 ml syringes and 2-way stopcocks in Luer-lock systems), reservoir bracket, disposable flow regulator, ringstand, 1/16” i.d. tubing and four- or eight-into-one micro-manifold.
1/32” i.d. silicon tube passes through, and is pinched closed by the valve. No liquid comes into contact with the valve. Easiest valves to clean and switch tubing. Open and close in approx. 30-50 ms.
Excellent chemical and corrosion resistance. Non-stick surface resists particle and chemical deposits. Faster opening and closing – in approx. 10 ms.
The Economy Pinch Valve System includes ValveLink8 controller, four pinch valves, 35 ml syringes, 2-way stopcocks, reservoir bracket, ringstand, 1/16” i.d. tubing and four-into-one micro-manifold.
Perfusion systems accept real-time TTL inputs to control valves so they can be controlled by a computer using most data acquisition hardware and software which you may already have. An optional program called EasyCode® is available for the Macintosh and PC/Windows to program ValveBanks (not ValveLinks). This software is used before an experiment – valve sequences are downloaded into the memory of the ValveBank where they are run.
Four easy steps to selecting your perfusion system.
- Number of channels required: 4, 8 or 16
- Valve type: Pinch Valves or Teflon Valves
- Type of controller: ValveLink® or ValveBank®
- Optional software: EasyCode®