Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Surface area – porosity – imperfection – or alteration
Patent
1993-07-27
1995-05-02
Housel, James C.
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Surface area, porosity, imperfection, or alteration
436 6, 436 8, 436 63, 436161, 436164, 436171, 436173, 436530, 422 53, 422 56, 422 58, 422101, 73 6447, G01N 1300, G01N 2129
Patent
active
054118883
ABSTRACT:
Methods for determining the corrosivity of a substance to human skin or membrane are disclosed. In one approach, corrosivity is evaluated by measuring the time required for the test substance to transit a biobarrier that mimics human skin or membranes or the time required to cause a component of such biobarrier to break down and transit the membrane. The invention also envisions alternative approaches which involve series of layers of dyes and corrosive-resistant materials coated onto microspheres or test strips. Use of these methods provides a rapid determination of the corrosivity of test materials.
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Gordon Virginia C.
Mirhashemi Soheila
Wei Rosalind W.
Housel James C.
Invitro International
Pyon Harold Y.
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