Resources Contact Us Home
Filtered petri dish

Image Number 2 for United States Patent #8163540.

A petri dish includes a cover and base, the cover having at least one circular opening in the top of the cover. A number of securing members are connected to the underside of the cover around the opening to secure at least one filter under the opening, the filter(s) being used to prevent any contaminants from the air from entering the petri dish. A guard member such as a plastic disc is disposed under the filter(s) to prevent any oil in the base of the petri dish from contaminating the filter(s). A sealing member is provided on a peripheral edge of the base to seal the petri dish when the petri dish is closed.

  Recently Added Patents
Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
Systems and methods for dynamically modifying subcriber service profile stored in home location register while roaming in wireless telecommunication networks
Isolated SCR ESD device
Repeating frame battery with joining of cell tabs via welded-on male and female slip-fit connectors
Predicting performance of an integrated circuit
Method for implementing dynamic pseudorandom keyboard remapping
  Randomly Featured Patents
Compositions and methods for selectively binding amines or amino acid enantiomers over their counter-enantiomers
Ski protector
Combined scanner and scale
Method for treating photosensitive lithographic printing plate
Liquid-phase thermal diffusion isotope separation apparatus and method having tapered column
Non-electric portable dishwasher
Paging receiver with continuously tunable antenna
Shift register, gate driving circuit with bi-directional transmission function, and LCD with double frame rate
Support system for portable video camera
Systems and methods for multi-state switch networks