Applying reagent to medium and device therefor

Details Applying reagent to medium and device therefor Applying reagent to medium and device therefor

1974-03-13

1976-08-17

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

424 12, G01N 3106, G01N 3316

Patent

active

039751627

ABSTRACT:
Device for applying a measured quantity of water-soluble or water-dispersible reagent to a water-containing solid medium for use in molecular diffusion or affinity separation procedures is provided in the form of a film consisting essentially of a film-forming solid organic polymeric binder which is soluble in water to the extent of at least 1% by weight at 20.degree.C. and dispersed in said binder a measured quantity of said reagent, said film being of a size and shape adapted to be placed in contact with said medium to permit said reagent and binder to diffuse completely into said medium. The device is used by placing it in face-to-face contact with a water-containing solid medium.

REFERENCES:
patent: 3092463 (1963-06-01), Adams, Jr. et al.
patent: 3126325 (1964-03-01), Poole
patent: 3252762 (1966-05-01), Adams, Jr. et al.
patent: 3416998 (1968-12-01), Streitfeld
patent: 3619371 (1971-09-01), Crook
patent: 3630957 (1971-12-01), Rey et al.

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