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™ PFX-880L Colorimeter: Oils, Fats, Waxes and Transparent Liquids
High-precision, automatic spectrophotometer for objective color measurement
Lovibond™ 711 Nesslerizer Systems
Designed for measuring unsaturated samples that are below the sensitivity of a normal, hand-held comparator system
Lovibond™ Comparator 705
Versatile and highly precise visual colorimetric water analysis system for rapid and accurate water analysis and color measurement
Lovibond™ PFXi-195/8 Colorimeter: Waters and Waste Waters
Accurate, efficient automatic colorimeter for objective color measurement of transparent liquids
Lovibond™ EC 3000 Saybolt EComparator
Provides an easy way to transition from subjective visual measurement to a non-subjective, accurate electronic measurement.
Lovibond™ PFXi-195/1 Colorimeter: Liquid Chemicals and Industrial Oils
Accurate, efficient automatic colorimeter for objective color measurement of transparent liquids
Lovibond™ EC 3000 ASTM EComparator
Provides an easy way to transition from subjective visual measurement to a non-subjective, accurate electronic measurement.
Lovibond™ Comparator Kit to Measure Gardner (Varnish) Color Scale
Hand-held and completely portable instrument ideal for use in the field, lab or plant
Lovibond™ RD125 Reactor
Used for the chemical digestion of water samples, such as in the determination of COD, TOC, Total Phosphate and Total Nitrogen
Lovibond™ TG268 Gloss Meter
The TG268 portable Gloss Meter features selectable 20°, 60° and 85° measurement angles to measure low, medium and high gloss levels on a wide range of materials.
Lovibond™ Gardner Scale Comparator 3000
Visual grading of Gardner color scales
Lovibond™ TG60 Gloss Meter
The TG60 portable Gloss Meter features a 60° detector angle for fast, precise and accurate gloss reading of materials with medium gloss.
Lovibond MD50 Colorimeter: Ozone
The MD50 Ozone Colorimeter is designed to measure Ozone in a non-laboratory setting using the DPD method.
Lovibond™ MD 100 Boiler Water Colorimeter
One colorimeter tests multiple parameters associated with boiler water.