A microplate assembly comprising a multi-well microplate, a plurality of vent caps and a porous vent film. The microplate includes a frame that houses a plurality of open wells in a rectangular array. Vent caps mount on the microplate to seal and vent the wells. When the vent caps are coupled to the...http://www.google.ca/patents/US6027694?utm_source=gb-gplus-sharePatent US6027694 - Spillproof microplate assembly