Patent ID: 7273759
Filing Date: 2007-09-25
Classification: B01L,G01N,Y10T

Abstract:
1. A device for processing biological/chemical samples comprising: n first multiwell plates each having x wells arranged in an array, wherein each well of said x wells has an outlet at a lower surface of the first multiwell plate and each well is adapted to receive a separate volume of sample; a second multiwell plate having y wells arranged in an array, wherein y=(x×n) and n ≧2, and each well of said y wells is adapted to receive a separate volume of sample from n first multiwell plates, and said outlets at the lower surface of said first multiwell plate are arranged to register with corresponding inlets of x′ wells of said y wells of said second multiwell plate when said first multiwell plate is stacked atop said second multiwell plate; and inert colorant disposed within at least one well of each of n first multiwell plates, wherein said colorant of each first multiwell plate is unique with respect to the colorant of the other first multiwell plates and said colorant is capable indicating that each unique colorant has been transferred from x wells of each first multiwell plate to a different quadrant of wells of said second multiwell plate with transfer of sample therebetween, and said colorant is capable of simultaneously indicating whether cross-contamination has occurred between wells of said second multiwell plate.