Colorimeters
Colorimeters
Instruments that measure light absorbance of a sample, and are based on the Beer-Lambert law, which states that the concentration of a solute is proportional to the absorbance of the sample. Available in benchtop and portable configurations.
What Is a Colorimeter?
A colorimeter measures the amount of light that passes through the solution as compared to the light that would pass through a pure solvent.
A photocell detects the amount of light passing through the solution and converts the light to an electrical signal. Higher concentrations and colors increase light absorption and the current produced by the photocell.
What Types of Colorimeters Are There?
Colorimeters may be visual or photoelectric. Visual colorimeters may be visual absorption meters or color comparators or true visual or tristimulus colorimeters.
Visual colorimeters compare the color of the test sample with a standard. These instruments are used for chemical analysis, determining concentration, or grading based on color. A tristimulus colorimeter works on the principle of visual equivalence and is more commonly used to monitor production of colored objects.
Photoelectric colorimeters can measure colors directly using filters and photoelectric cells. Light reflected or transmitted from the object passes through various filters to reach the photon detectors.
How Are Colorimeters Used?
Many scientific colorimeters are designed to measure single or multiple parameters like chlorine that are frequently tested in drinking water, wastewater, food and beverages, aquaculture, and agriculture. Colorimeters are also used to objectively measure the color of beers, malts, and caramels and industrial, mineral, and edible oils, fats, waxes, petrochemicals, and surfactants.
Lovibond™ MD600 Handheld Water Quality Colorimeter
Rugged, waterproof multi-parameter colorimeters for laboratory and field testing
Lovibond™ Model F Colorimeter
Versatile instrument for color measurement of products that transmit light as well as opaque solids, powders and pastes
Lovibond™ PFXi-995/P Colorimeter: Petroleum Oils and Waxes
High-precision, automatic spectrophotometer for objective color measurement
Biochrom Ultrospec™ 35c Colorimeter
Ultrospec™ 35c Colorimeter measures and records the concentration of solutions at set wavelengths
Lovibond™ PFXi-195/1 Colorimeter: Liquid Chemicals and Industrial Oils
Accurate, efficient automatic colorimeter for objective color measurement of transparent liquids
Thermo Scientific™ Orion™ AQUAfast™ AQ3170 Colorimeter
Gather accurate chlorine measurements with a colorimeter designed for both the laboratory and the field in markets such as drinking water, wastewater, food & beverage, aquaculture, and agriculture.
Thermo Scientific™ Orion™ AQUAfast™ AQ3140 COD Colorimeter
Designed for the laboratory, this COD colorimeter is a single parameter instrument for determining chemical oxygen demand index in water for markets such as wastewater, food & beverage, aquaculture, and agriculture.
Lovibond™ PFXi-880/IP17 Colorimeter: Petroleum Oils and Fuels
High-precision, automatic spectrophotometer for objective color measurement
Lovibond™ PFXi-880 Series Spectrophotometers
With RCMSi technology (Remote Calibration & Maintenance Service) for remote calibration and servicing via internet without leaving benchtop
Lovibond™ FAC Scale Comparator 3000
Visual grading of FAC color scales
Lovibond™ AF325 Platinum-Cobalt/Hazen/APHA Test Kit
The Lovibond™ AF325 is a test kit for visual colour grading of Platinum-Cobalt/Hazen/APHA Colour over the range 10 to 250mg Pt/l.
Lovibond™ PFXi-880/P Colorimeter: Mineral Oils, Waxes and Petrochemicals
High-precision, automatic spectrophotometer for objective color measurement
Lovibond™ Gardner Scale Comparator 3000
Visual grading of Gardner color scales