The EEL 12M Opacimeter is a convenient, self contained instrument for measuring the percentage opacity and whiteness of printing ink, paper and plastics in a research and production environment.

Microprocessor comparison of the diffuse reflectance of the sample against black & white references to display opacity.

Applications
Coatings, cosmetics, dyes, film, inks, paint, paper, plastics, packaging materials, sheet, varnishes and waxes.

Features
Easy to use, compact, microprocessor controlled, measures white and coloured film and measures whiteness.
Operation
The instrument is calibrated by placing a sample with a reference standard, over the sample port of the integrating cube and setting the unit to ready 100. The sample only is then measured against the black cavity, light reflected from the sample being integrated within the cube. The new reading is percentage opacity and is colour independent. Brightness as diffuse reflectance is measured similarly by utilising a white reference standard.

Range of Measurements

• Opacity of paper, plastics or similar material, is the ratio of the diffuse reflectance measured when backed by a black material and by a white material.
• Hiding power of a paint or coating – is the ratio of its diffuse reflectance with a black and a white backing. The paint can be applied to a card with black and white areas or the coating can be on a polyester foil/film and the measurements are made with a black backing and with a white ceramic tile.
• Contrast Ratio – is the ratio of diffuse reflectance from two areas of similar colour.
• Transmitted Opacity – is the total transmittance from two areas of similar colour.

Specification Standards

Specifications

For further information, please contact our Sales Team on 01223 492081 or via sales@tendringpacific.com