The Tintometer Model F is a versatile instrument for measuring the color of products that transmit light (such as fats and fatty oils, liquid chemicals and pharmaceuticals) as well as opaque solids, powders and pastes. The user simultaneously compares the color of light that is either transmitted through or reflected from the sample, with that transmitted through a series of glass color filters in 3 primary colors: red, blue and yellow. The slides are adjusted until a visual color match is found for the sample and the color is then expressed in Lovibond units. The Tintometer Model F is supplied with a complete set of Lovibond glass filters (Red 0.1 - 70; Yellow 0.1 - 70; Blue 0.1 - 40; Neutral 0.1 - 3.0), a sample chamber insert for easy cleaning, 1" and 5.25" rectangular fused glass cells, and instructions. An optional sample holder may be required for measuring light-reflecting products. Includes a 12 volt power pack switchable to suit 110/220 Volt supply.