Need for highly sensitive and accurate colorimeters
Professor Arnold Wilkins designed the Intuitive Colorimeter
, which was launched in 1993, and was a co-lead on the new Intuitive Colorimeter
(2008), who compared the measurements obtained by different scanners with those of a colorimeter
in assessing color patterns, when applying image analysis methodology to the pulp of several fruits.
AS AN EIGHTH GRADE TECHNOLOGY EDUCATION PROJECT
Instruments such as spectrophotometers and colorimeters
have been used in industrial and research settings for the measurement of color of a wide range of materials and substrates.
The researchers used the colorimeter
to illuminate text with coloured light, manipulating hue and saturation at constant luminance.
Based on the Spyder2 colorimeter
, it is targeted to designers, photographers and digital professionals, and also features computer-based home theater capabilities.
Tests to be featured include: viscosity (Stormer, Brookfield, Zahn), hardness (Shore, pencil, etc.), gloss and color (colorimeter
, glossmeter), dispersion (Hegman, particle size analyzer), opacity (drawdown bar and cards), abrasion and scrub resistance (abrasion and scrub testors), adhesion (cross-hatch, pull-off, impact), pH, solids content, and dry time (pH meter, dry time recorder, cup and oven).
Testing for visual dyslexia involves the use of a machine called a Colorimeter
used in hospital eye clinics but not widely available in opticians.
In one method, a commercial hand-held colorimeter
measured L, a, b, x, y, z and hue angle values in 10 locations on each chip.
The new kits feature the AQUAfast AQ4000 colorimeter
and Thereto Orion portable meters, electrodes, and reagents for testing water samples.
The chlorophyll content of various dried leaf samples was monitored as the--a value(greenness) on a colorimeter
. The samples were also submitted to HPLC analysis for quantitation of chlorophyll.