These cell culture microplates from Corning® come in solid black and white colors. Black plates have low background fluorescence and minimal light scatter while white plates enhance luminescent signals and have low background luminescence and fluorescence. Standard well volume for round wells with flat bottom is 360µL with recommended working volumes of 75 to 200µL. Half Area microplate has vell volume of 190µL with working volumes of 25 to 100µL. Polystyrene. Sterilized by gamma radiation and certified nonpyrogenic.