Abstract: An environmentally friendly penetrant used in non-destructive testing of material includes a vegetable oil fatty acid ester. A first embodiment of the penetrant is a post-emulsifiable fluorescent penetrant, a second embodiment of the penetrant is a heatable fluorescent penetrant, a third embodiment of the penetrant is a water washable fluorescent penetrant, a fourth embodiment of the penetrant is a visible water washable penetrant, and a fifth embodiment is a visible solvent removable penetrant. The heatable fluorescent penetrant includes a phenolic antioxidant to provide stability to at least approximately 120 degrees Fahrenheit. A method for using the heatable fluorescent penetrant includes heating the penetrant to lower penetrant viscosity and thus provide better penetration into flaws in the material.

Abstract: An environmentally friendly penetrant used in non-destructive testing of material includes a vegetable oil fatty acid ester. A first embodiment of the penetrant is a post-emulsifiable fluorescent penetrant, a second embodiment of the penetrant is a heatable fluorescent penetrant, a third embodiment of the penetrant is a water washable fluorescent penetrant, a fourth embodiment of the penetrant is a visible water washable penetrant, and a fifth embodiment is a visible solvent removable penetrant. The heatable fluorescent penetrant includes a phenolic antioxidant to provide stability to at least approximately 120 degrees Fahrenheit. A method for using the heatable fluorescent penetrant includes heating the penetrant to lower penetrant viscosity and thus provide better penetration into flaws in the material.

Abstract: Corrosion resistance of metals such as aluminum is promoted by contact with a formulation containing an aqueous emulsion of an acrylic polymer; a blocked water-soluble zirconium catalyst; a volatile organic solvent/water mixture; and a corrosion additive component.

Abstract: Polycarbonate water bottles are refurbished by automated cycling through conveyor system having a loading and unloading section, a temperature adjusting section, a vapor exposure section, and a cooling and curing section. Each of the sections are associated in a continuous circuit by means of a conveyor system which conveys a plurality of bottles through the refurbishing system. Each bottle is first heated to not less than 103.degree. F. and then cooled to a predetermined state wherein the thinner portions of each bottle are at a temperature in the range of 75.degree.-80.degree. F. and the thicker portions are at a temperature in the range of 90.degree.-95.degree. F. Each bottle is then subjected to a dichloromethane vapor cloud for at least 10 seconds, during which time the skin layer becomes fluidic and the surface tension causes all blemishes and scratches to be removed.