Resources Contact Us Home
Device for testing air for microorganism content

Image Number 4 for United States Patent #4663293.

In a device for testing air for microorganism content with a rapidly rotating impeller inside a cylinder that has a backing sheet coated with culture medium against its inside surface, microorganisms that vary more extensively in size can be detected with almost equal effectiveness, the throughput of air can easily be determined, and the precipitation effect can be precisely tested because the backing sheet rotates along with the impeller, the blades of the propeller are at a low angle to the plane it rotates in, the air enters at a location that is separate from the location at which it leaves, through inlets from above and down and out through outlets, and the inner surface of the rotor below the impeller chamber is in the form of a channeling cylinder.

  Recently Added Patents
Method of synchronization for low power idle
Protein purification
Signal processing apparatus and methods
Subscribing to content
Active element machine computation
Control system for an internal combustion engine
Display screen or portion thereof with icon
  Randomly Featured Patents
Production and recovery of para-cymene
Multiple combustion ignition timing system
Electrostatic printing of conductors on photoresists and liquid metallic toners therefor
Control of logical write protection of rewritable data storage cartridge
Process as well as device for measuring a component amount released during a thermo-chemical treatment of metallic work piece from the gaseous atmosphere
Fiber optic switch package and a method of assembling a fiber optic switch package having an inverted ring structure
Classroom traveler cart
Semiconductor memory
Coil edge protection from lifting device
Obstacle sensor operating by collimation and focusing of the emitted wave