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900A Micropressure System

  1. Using the 900A Micropressure System for Measuring Pressure in Small Blood Vessels and Cells
    July 16, 2018
    This 900A video series of 6 videos is designed to help familiarize you with the basic operation of the 900A Micropressure System. The 900A was designed for measuring pressures in kidney tubules, and it has many applications. It has recently been used for measuring ventricular blood pressure in larval fish. We suggest that you become familiar with the information in the instruction manual and the parts and techniques you need to operate the system effectively. Please read the manual and watch these videos prior to setting up and testing your 900A Micropressure System.  Instrument Description The 900A Micropressure System is designed to measure pressures from –200 to +400 mmHg in sma
  2. 900A Micropressure System from WPI
    May 01, 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.
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