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.
Thermo Scientific™ Orion™ AQ3700 AQUAfast™ Colorimeter
Select this multiparameter colorimeter to manage your water and wastewater analysis using over 90 preprogrammed methods.
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.
Lovibond™ PFX-880L Colorimeter: Oils, Fats, Waxes and Transparent Liquids
High-precision, automatic spectrophotometer for objective color measurement
Lovibond™ MD 100 Chlorine Colorimeter
The MD 100 Chlorine Colorimeter is a single parameter instrument for measuring the concentration of Free and Total Chlorine in a water sample. The hand-held design makes it ideal for use outside of a laboratory setting and the simplistic user interface ensures ease-of-use by operators of all levels.
Lovibond™ PFXi-195/1 Colorimeter: Liquid Chemicals and Industrial Oils
Accurate, efficient automatic colorimeter for objective color measurement of transparent liquids
Lovibond™ MD600 Handheld Water Quality Colorimeter
Rugged, waterproof multi-parameter colorimeters for laboratory and field testing
Lovibond™ MD 610 Photometer
Enjoy the mobility of a portable photometer with the features of a modern laboratory photometer. The Lovibond MD 610 Photometer now features a Bluetooth inferface for connection to smart phones and tablets to connect to iOS™ and Android™ app for data management and email delivery. The data management then enables analysis and export as a CSV file or graph via email.
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
Thermo Scientific™ Orion™ AQUAfast™ AQ4000 Colorimeter and Accessories
Measure common water and wastewater parameters using this colorimeter with 65 pre-programmed methods and auto-test ampoule compatibility.
AF332 EP Color Scale
Used to assess product color by comparison with representative series of fixed color standards
Lovibond™ PFXi-195/2 Colorimeter: Petroleum Oils and Fuels
Accurate, efficient automatic colorimeter for objective color measurement of transparent liquids
Lovibond™ PFX-880/AT Colorimeter: Mineral Oils, Waxes and Petrochemicals
High-precision, automatic spectrophotometer for objective color measurement
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.
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