Three types of 96-well microtest plates are offered for general (non-tissue culture) applications including microbiology and serology. Available in “U” (round bottom), “V” (conical bottom) and flat bottom shapes. Each plate is individually wrapped to protect from air contaminants. Made from high optic transmission grade polystyrene, the microtest plates are arranged in a standard 12 x 8 configuration and have alpha-numeric position markings. Optional lids are also available. Both plates and lids may be purchased sterile or non-sterile.