Patent ID: 8501096

Claim:
A chamber block for use in a centrifugally operating system for preparing treated monolayers of sample material, said chamber block comprising: a top and a bottom; first and second opposing side walls extending between said top and bottom at opposing sides thereof and attached to said top and bottom; an upfield side wall, the upfield side wall extending along a centrifugal up field side of said chamber block and extending between said top and bottom, and extending between said first and second opposing side walls, and attached to said top and bottom; an output drain port positioned proximate said bottom and down field of said centrifugal upfield side wall; and a centrifugally operated valve for opening said output drain port, said top comprising a sample material input wall; said upfield side wall and said top defining an opening therebetween, the opening being a treating agent input, wherein said top, bottom, first and second opposing side walls, and upfield side wall define an interior cavity of said chamber block, said interior cavity being open at a down field side thereof, said down field side adapted to receive in fluid sealing engagement a removable receiving surface member the removable receiving surface member having a surface area and forming a downfield side wall of said chamber block extending between said first and second opposing side walls, a substantial portion of the entire surface area of the receiving surface member contacting said interior cavity.