Fluorescent Liquid Views

General Goods

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Index Terms fluorescent liquid penetrant testing; nondestructive testing; water-washable method; Aerosol spray applications; Black light inspection; Ceramic materials/applications; Cold shuts; Contaminant removal; Cracking; Dwell test; Electrostatic spray application; Ferrous metals/alloys; Fluorescent liquid penetrant testing; Glass; Impurities; Laminations; Leak testing; Liquid penetration; Nonferrous metals/alloys; Nonporous metallic/nonmetallic materials; Penetrant inspection; Porosity; Seams; Surface analysis--metals/alloys; ICS Number Code 19.100 (Non-destructive testing)

Sharpiesrs"s Smear Guard technology prevents smearing of many pen and marker inks, provided the ink is thoroughly dry before highlighting. Fluorescent Pink Sharpie Liquid Accent Highlighters Fluorescent Pink Sharpie Liquid Accent Highlighters treg; Sharpie is a registered trademark of Sanford Corporation. reg; Liquid Accent is a registered trademark. ntrade; Smear Guard is a trademark.

R. D. Larrabee has already proposed to add a fluorescent material to a liquid crystal material and to vary fluorescent intensity of the fluorescent material by altering the electric field across the liquid crystal material (RCA Review, Vol 34, P 329, 1973). However, his paper states that he failed to find liquid crystal materials which do not absorb ultraviolet light at room temperature. This appears attributable to the fact that, when causing a fluorescent material in a liquid crystal material to absorb a varying amount of light in accordance with the orientation of the liquid crystal, to vary the flourescence intensity with the light absorption, the exciting light is absorbed by the liquid crystal layer without effectively exciting the flourescent material.

The present inventors have proposed an improved fluorescent liquid crystal display as U.S. patent application Ser. No. 935,246 filed on Aug. 21, 1978 wherein light scattering phenomena takes place in the fluorescent liquid crystal display in response to excitation of an electric field, heat or the like and the flourescence emitted from the fluorescent material is effectively taken out of the flourescent material contained within a liquid crystal display. The corresponding German Patent Application P No. 28 37 257.8 was filed with the German Patent Office on Aug. 25, 1978.