| http://www.w3.org/ns/prov#value | - ose, can also be added to the film layer (1) for the aqueous phase which is present after wetting the film layer (1) with an aqueous liquid to be analyzed.In order to produce a film layer (1), all components which, when the film layer is used for the determination of an ion in an aqueous liquid, in particular in a body fluid such as blood, plasma, serum or urine, should not be taken up in theaqueo
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