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Tintometer - A Century of Excellence in Colour Measurement In the 1800s, Joseph Lovibond, the founder of The Tintometer Ltd, developed the original Lovibond Colour Scale, which was based on a calibrated series of red, yellow and blue glasses. Today, oil processors throughout the world use Lovibond colorimeters in the analysis of edible and industrial oils, oleochemicals, surfactants and oil derivatives. Over the years the Lovibond brand has become the hallmark for colour measurement in oil processing, recognised by major international standardising bodies, including the AOCS,ASTM and DGF, which quote our equipment in their specifications for the colour of oils and derivatives. It is this unparalleled knowledge and experience that are embodied into the Lovibond PFX995 automatic colorimeter. Comprehensive and Flexible Colour Data The Lovibond PFX995 is a spectrophotometric colorimeter, designed to meet the colour analysis requirements in oils and chemicals processing. It provides objective, unbiased colour data according to a full range of established industry scales; measurements can also be displayed as spectral data and CIE values. However, the user can easily customise the PFX995 to display only those scales of interest. Colour Scales * 13e-92, AOCS Method Cc 13j-97) AOCS-Tintometer (AOCS Cc 13b-45, AOCS Method Cc 13j-97) Gardner Colour (ASTM D1544, AOCS Td1a-64) Pt-Co/Hazen/APHA (ASTM D1209, AOCS Td 1b-64) FAC (AOCS Cc 13a-43) Chlorophyll A & B beta Carotene Iodine (DIN 6162) Hess-Ives Colour Units Klett Colour (blue filter KS-42) Kreis Value CIE Values (ASTM E308) Spectral data (420 - 710 nm) Spectral data (420 - 710 nm) Scope Oils, fats, chemicals, resins and other transparent liquids in terms of Lovibond Red, Yellow, Blue and Neutral units Special red and yellow version of the Lovibond RYBN scale used for oils, fats and derivatives Oils & chemicals from pale yellow to red including lecithins, resins, drying oils & fatty acids Light-coloured oils and derivatives such as refined glycerine and fatty nitrogen compounds; pale coloured chemicals Dark oils and fats including tallows and greases Direct measurement of content in parts per million Direct measurement of content in parts per million Oils and chemicals ranging from yellow to brown Chemicals and surfactant liquids Detergents & Surfactants Quality testing of fats and oils for oxidative rancidity X Y Z Tristimulus values; x y Y Chromaticity coordinates; L*C*h Colour space; CIE L*a*b* Colour space; Hunter L a b Colour space; E colour difference Transmittance, optical density (full spectrum & specified wavelengths) Transmittance, optical density (full spectrum & specified wavelengths) Lovibond RYBN (AOCS Method Cc 0 - 70 Red,Yellow; 0 - 40 Blue; 0 - 3.9 Neutral 0 - 20 Red, 0 - 70 Yellow 1 - 18 units 0 - 500 mg Pt/l 1 - 45 (odd numbers) 0 - 100 ppm 0 - 1000 ppm 1 - 500 units 0 - 1000 units Depends on concentration/pathlength 0 - 100% T, 0 - 2.5 OD 0 - 100% T, 0 - 2.5 OD * The Lovibond PFX995 also includes: the AF960 Lovibond Scale, an abridged red and yellow scale which was introduced on the AF960, an early electronic colorimeter; the AF960 AOCS scale, which is similar to AOCS-Tintometer Colour but modified for use on the AF960. Precision Colour Analysis made Simple The Lovibond PFX995 is an easy to use, automatic instrument. The menu system guides operators through the selection of operating parameters. Thereafter, measurements are initiated by a single key press and take less than 25 seconds to complete. Use of sample cells up to 6” path length ensures precise colour measurement, without multiplying errors, even with unsaturated samples. Confide Instrument Performance The PFX995 is a rugged colorimeter with a fabricated steel housing, which is designed to function equally as a QC instrument within the laboratory or on 24 hour operation in a production environment. A diagnostic test routine and status report allows users to conduct periodic checks on the instrument or identify faults. For regular conformance testing the PFX995 is also supplied with a certified glass filter of specified Lovibond colour value. Optimised Use of Colour Data The accuracy, repeatability and reproducibility of data provided by the Lovibond PFX995 allow for tighter colour specifications and greater colour consistency in oil processing. The PFX995 is supplied with a Windows software program, allowing data sets to be automatically downloaded to a PC where they can be processed or stored. It also permits remote control of the instrument. TECHNICAL SPECIFICATION Measuring principle 16 interference filters Spectral response 420 - 710 nm Bandwidth 20 nm Repeatability - chromaticity (x y) ± 0.0002 - transmittance ± 0.25 % - Lovibond values ± 0.1 Measurement time Less than 25 seconds Calibration Single key press; fully automated Light source 5 Volt, 10 Watt tungsten halogen lamp (lens ended) Illuminant CIE Illuminant A C, D65 Observer 2°, 10° Path length 0.004" - 6" (0.1 - 153 mm) Interface Parallel printer port, RS 232 port Input voltage Universal, via external power supply Approvals CE Display 2 x 40-character, back-lit LCD Keypad 21-key membrane keypad; washable polyester with audible feedback Instructions 7 languages: English, French, German, Spanish, Italian, Portuguese, Dutch Heater unit Factory fitted option, 95°C max Instrument housing Fabricated sheet steel with tough, textured paint finish Dimensions Width 515mm, depth 195mm, height 170mm Weight 7.75 kg The Lovibond PFX995 is supplied complete with Windows software, optical glass cells for each of the colour scales included, a calibrated glass conformance filter, a spare lamp and instructions. The addition of user specific scales to standard instruments will be considered. Optional Items for Individual Applications Integrated heater unit Conformance filter sets Certified Colour standards A factory fitted option for melting solid samples such as fats and waxes and maintaining them in a liquid state. Sets of graded glass filters, representing a spread of colours from each of the main scales, are available for quick and simple calibration checks. Ideal for routine calibration and verification of test data. The precision filament lamp is easily accessed and changed from outside the instrument
