Lovibond™ Model F Colorimeter

Description

• Visual colorimeter designed to optimize the use of Lovibond™ glass filters in order to express color in terms of Lovibond Red, Yellow, Blue and Neutral
• It is arranged with two adjacent fields of view, seen through the viewing tube, so that the product in the sample field and a white reflective surface in the comparison field are observed side by side, suitably illuminated
• The Lovibond glasses are introduced into the comparison field by a simple system of sliding racks, allowing the user to compare the color of light which is either transmitted through or reflected from the sample with that transmitted through the glasses
• A series of neutral glasses in racks is also supplied; these can be introduced into the sample field to dull the color of products which are too bright to obtain a good color match using Lovibond Red, Yellow or Blue glasses
• The racks are varied until a visual color match is found for the light from the sample and its color can then be expressed in Lovibond units
• For applications including fats and fatty oils, bleached lac, liquid chemicals and pharmaceuticals Glass color standards housed in durable racks External, low-voltage regulated power supply Prismatic optical system provides improved color matching Balanced field of view Diffused tungsten-halogen light source Replaceable sample chamber liner Designed to allow easy cleaning and maintenance Specifications Measuring principle: visual, in terms of Lovibond units Modes: transmittance, reflectance Range: 0.1-79.9 Red, Yellow; 0.1-49.9 Blue; 0.1-3.9 Neutral Resolution: 0.1 Lovibond unit Optical system: 11 glass-filled nylon racks containing a graduated range of Lovibond color glasses Viewing system: fully adjustable, prismatic with integral blue filter for light standardization Light source: 2 x 12V, 10w tungsten halogen lamp Illuminant: approximates to daylight Path length: up to 153mm (6 in.) Power pack: 12V AC, switchable to suit 220/110V supply Certifications CE approved