Patent ID: 8163356

Claim:
A laboratory consumable comprising a polymeric coating, wherein the polymeric coating is formed by exposing the consumable to a pulsed plasma for a period of time sufficient to form a polymeric layer on a surface of the laboratory consumable, the plasma comprising a compound of formula (I) where R 1 , R 2 and R 3 are selected independently from hydrogen, alkyl, haloalkyl or aryl optionally substituted by halogen; and R 4 is a group XR 5 where R 5 is an alkyl or haloalkyl group and X is a bond; or R 4 is C(O)O(CH 2 ) n Y where n is an integer of 1 to 10 and Y is a bond, an alkyl or haloalkyl group, or a sulphonamide group; or R 4 is (O) p R 6 (O) q (CH 2 ) t where R 6 is aryl optionally substituted by halogen, p is 0 or 1, q is 0 or 1 and t is 0 or an integer of 1 to 10, provided that where q is 1, t is other than 0.