초록 ▼

A volume independent test device is formed in which the reagent matrix is covered by a water-impermeable coating or membrane. At least three openings extend through the coating or membrane material, penetrating into the underlying reagent matrix. These openings permit liquid to pass through the coat

A volume independent test device is formed in which the reagent matrix is covered by a water-impermeable coating or membrane. At least three openings extend through the coating or membrane material, penetrating into the underlying reagent matrix. These openings permit liquid to pass through the coating or membrane material and into the reagent matrix material until the reagent matrix becomes saturated.

대표청구항 ▼

A volume independent test device comprising a reagent matrix covered by an adhering layer having means defining at least three openings extending through said adhering layer and penetrating into the underlying reagent matrix which permit liquid to pass through said adhering layer into the reagent ma

A volume independent test device comprising a reagent matrix covered by an adhering layer having means defining at least three openings extending through said adhering layer and penetrating into the underlying reagent matrix which permit liquid to pass through said adhering layer into the reagent matrix material until the reagent matrix becomes saturated, said adhering layer being positioned to cover all of the liquid contacting surface of said reagent matrix and being constructed of a material which is impermeable or semipermeable to liquid.