Abstract: Low soluble arsenic diatomite filter aids and method of making such filter aids are disclosed. Alumina and/or aluminum hydroxide (ATH) are used as additives when preparing the filter aids, which may be straight-calcined or flux-calcined. Alternatively, activated alumina may be added to an already straight-calcined or flux-calcined diatomite filter aid. As compared to either straight-calcined or soda ash flux-calcined diatomite filter aids of similar permeabilities made from the same ore, the disclosed filter aids have lower soluble arsenic content. The disclosed filter aids have a soluble arsenic content, either by the OIV, EBC or USFCC method, of about 60% or less than the straight or flux-calcined diatomite filter aids of similar permeability without an alumina or ATH additive.

Abstract: Processes for manufacturing low soluble iron diatomite filter aids and such filter aids are disclosed. Aluminum oxide and/or aluminum hydroxide are used as additives when preparing the flux-calcined diatomite filter aids. As compared to either straight-calcined or soda ash flux-calcined diatomite filter aids of similar permeabilities made from the same ore, the disclosed filter aids have lower soluble iron levels. For instance, disclosed filter aids of about 0.5 to about 2.0 Darcy were made using either an aluminum oxide or aluminum hydroxide additive with soda ash. The disclosed filter aids may have an EBC soluble iron content of less than 80 ppm versus 130 ppm for similar filter aids that were made from the same ore and flux-calcined with just soda ash.

Abstract: An automatic compliance testing system for evaluating the compliance of a graphic element with one or more conditions within desktop designed consumer packaging. The automatic compliance testing system includes an Encapsulated PostScript™ file that has an executable module which tests the commands geometrically defining the graphic element. The results of the self-checking operation are communicated to a checklist module. The checklist module is an executable module which generates a checklist that displays the test results. The checklist module may also test the compliance of the graphic element with predefined criteria, such as percentage of available display surface occupied, wherein the available display surface is defined using one or more Encapsulated PostScript™ files having a sizing module for calculating the area of the shape defined by the file.

Abstract: An automatic compliance testing system for desktop designed consumer packaging. The automatic compliance testing system comprises an Encapsulated PostScript™ barcode file which includes an executable self-checking module which tests the barcode file for specification violations to the UPC barcode definition. The results of the self-checking operation are communicated to a checklist module. The checklist module is an executable module which generates a checklist that displays the test results. The checklist may be placed at any location, scaled, mirrored or rotated within the design document but in most cases adjacent to or outside the boundaries of the consumer packaging being designed.

Abstract: A method of chemically polishing medical implants by immersing them in a solution including lactic acid, hydrofluoric acid, and nitric acid to produce smooth, matte finished implants.