Mathies:Dynamic Coating

Coating Procedure Using polyDuramide

polyDuramind (MW~ 2,000,000 g/mole) is the trade name for poly hydroxyethyleacrylamide (pHEA)

The dynamic coating solution is prepared at a concentration of 0.25% (wt%) in deionized water.

Ex. To prepare 20 mL of polyDuramide solution from lyopholized sample: Dissolve 50 mg of polyDuramide in 20 mL of water

(1) Rinse channel with DI water

(2) Remove water

(3) Fill channel with 1 M HCl, let stand for 15 minutes

(4) Remove HCl

(5) Rinse channel with DI water

(6) Remove water

(7) Fill channel with coating solution, let stand for 15 minutes

(8) Remove coating solution. Chip should be coated.

If desired, rinse channel with DI water followed with acetonitrile. Dry channel and chip is ready to use.

This coating is very stable. However, when not in use, it would be best to store at ~ 4 °C.