Color Instrument Reads Clear & Opaque Samples.A new benchtop color-measurement spectrophotometer spectrophotometer, instrument for measuring and comparing the intensities of common spectral lines in the spectra of two different sources of light. See photometry; spectroscope; spectrum. tests both reflectance and transmittance using double-beam optics, diffuse/8 geometry, and a long-life xenon xenon (zē`nŏn) [Gr.,=strange], gaseous chemical element; symbol Xe; at. no. 54; at. wt. 131.29; m.p. −111.9°C;; b.p. −107.1°C;; density 5.86 grams per liter at STP; valence usually 0. lamp. ColorQuest XE from Hunter Associates Laboratory, Inc., Reston, Va., measures color and yellowness and whiteness indexes. Standard features include large- and small-area measurement with automated lens change, automated specular spec·u·lar adj. Of, resembling, or produced by a mirror or speculum. spec u·lar·ly adv.Adj. 1. component inclusion/exclusion, and uv calibration and control for accurate measurement of optically brightened materials. The instrument comes with Universal QC software. Accessories include a transmission clamp for measuring thin films and a preform pre·form tr.v. pre·formed, pre·form·ing, pre·forms 1. To shape or form beforehand. 2. To determine the shape or form of beforehand. n. 1. holder for measuring plastic preforms. |
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u·lar·ly adv.
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