Detection of periodate/metaperiodate

In the printing industry screens and stencils are widely used. It is sometimes necessary to remove the stencil from the mesh so that the sceen can be reclaimed and re-used; to do so involves the removal of resin through the chemical oxidation of covalent chemical bonds that were first formed during the UV curing of the resin stencil/image onto the mesh.


A  common chemical used in screen cleaning is a solution of sodium metaperiodate. Controlling the concentration of these periodates in the mesh reclaiming process is traditional quite difficult, and relies on the experience of the operators.


ZP has solved the issue of periodate control during the mesh reclaiming process with our Spectrum Sensing technology, which can detect and quantify the periodate in the wash solution and this information can be used by the operator to determine whether to add more cleaning material.