| abstract |
A laboratory consumable having a polymeric coating, formed by exposing said consumable to pulsed plasma comprising a compound of formula (I) where R1, R2 and R3 are independently selected from hydrogen,alkyl, haloalkyl or aryl optionally substituted by halo; and R4 is a group X-R5 where R5 is an alkyl or haloalkyl group and X is a bond; a group of formula -C (O) O (CH2) nY- where n is an integer of from 1 to 10 and Y is a bond or a sulphonamide group; or a group - (O) PR6 (O) q (CH2) t-where R6 is aryl optionally substituted by halo, p is 0 or 1, q is 0 or 1 and t is 0 or an integer of from 1 to 10, provided that where q is 1, t is other than 0, for a sufficient period of time to allow a polymeric layer to form on the surface of the laboratory consumable. Consumables of this type show significantly reduced liquid sample retention, maximum sample recovery and ultra non-binding properties, as well as oil and water-repellency . |