title: Use of buffer solutions for patch testing.
abstract: Acid and alkaline products must usually be diluted before patch testing in order to be non-irritant. The use of ordinary solvents for the dilution often means low-concentration products to be tested. By using buffer solutions, the possible test concentrations can be increased at least many hundred fold.
mesh_terms: D002021:Buffers; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010328:Patch Tests; D012882:Skin Tests; D012996:Solutions
chemical_list: D002021:Buffers; D012996:Solutions