Colorimeter Colourwave
Product Code : EL-CLE-10974
Quick answer: The Colorimeter Colourwave measures how much light a coloured solution absorbs, showing absorbance or % transmission at one button push, with 8 filters from 440 to 700 nm and a kinetic mode for reaction-rate work. It is used to find concentrations by the Beer-Lambert law. Lab Exports supplies it as a reseller to schools, colleges and universities.
Specifications
| Parameter | Value |
|---|---|
| Display modes | Absorbance units or % transmission, one-button switching; kinetic mode for continuous readings |
| Filters | 8 filters, 440 to 700 nm, on an integral filter wheel |
| Bandwidth | 40 nm |
| Range | -0.3 to 1.99 A; 0 to 199 %T |
| Sample format | 10 x 10 mm cuvettes or 16 mm diameter tubes |
| Outputs | Analogue 0-2 V for 0-2 A and 0-1.99 V for 0-199 %T; RS232 digital |
| Dimensions (L x W x D) | 180 x 150 x 60 mm |
How the colorimetry experiment is done
A colorimeter shines light of a chosen colour through a solution and measures how much of it is transmitted. By the Beer-Lambert law, absorbance A = epsilon x c x l, so for a fixed path length l (the 10 mm cuvette) the absorbance is proportional to the concentration c. Transmission and absorbance are linked by A = -log10(T), which is why the instrument can show either value from the same measurement.
The filter chosen should be the complementary colour of the solution, where its absorbance is highest: a blue copper(II) sulfate solution, for example, absorbs in the red part of the spectrum, so a red filter gives the most sensitive reading.
- Select the filter on the filter wheel that matches the colour absorbed by the solution.
- Zero the instrument with a cuvette of the pure solvent (the blank).
- Measure the absorbance of a series of standard solutions of known concentration and plot a calibration graph.
- Measure the unknown sample and read its concentration from the graph.
- For reaction rates, switch to kinetic mode and log readings continuously through the analogue or RS232 output.
Key features
- One-button switching between absorbance and % transmission
- Kinetic mode for continuous readings in reaction-rate experiments
- 8 filters from 440 to 700 nm on an integral filter wheel, 40 nm bandwidth
- Accepts 10 x 10 mm cuvettes or 16 mm diameter tubes
- Analogue and RS232 outputs for data logging
- Compact 180 x 150 x 60 mm body
Documentation and supply
Lab Exports supplies the Colourwave colorimeter as a reseller; it is not manufactured by Lab Exports. It is supplied from Delhi to schools, colleges and universities in India and 60+ countries, with the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Chemistry Lab Equipment products
- Welding Filter Lens (EL-CLE-10986)
- Helium Balloon Gas Cylinders (EL-CLE-10987)
- Bottled Gas, Mini, Non-Refillable (EL-CLE-10988)
- Balloon Regulator (EL-CLE-10989)
- Fixed Flow Regulator (EL-CLE-10990)
- Miniflow Regulator (EL-CLE-10991)
The full range is in the Chemistry Lab Equipment section of the Chemistry Lab range.
Frequently asked questions
What does the Colourwave colorimeter measure?
Absorbance from -0.3 to 1.99 A or transmission from 0 to 199 %T, switchable with one button, using 8 filters from 440 to 700 nm.
Can the colorimeter be connected to a data logger or computer?
Yes. It has analogue outputs (0-2 V for absorbance, 0-1.99 V for %T) and an RS232 digital output.
What sample holders does the colorimeter take?
Standard 10 x 10 mm cuvettes or 16 mm diameter tubes.
What is the price of the Colourwave colorimeter?
Prices are not published on the website. Add the Colourwave colorimeter to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-CLE-10974 and the quantity, to receive a quotation.
Is the Colourwave colorimeter made by Lab Exports?
No. Lab Exports supplies the Colourwave colorimeter as a reseller under house code EL-CLE-10974. It can be quoted together with other laboratory equipment in one enquiry.
Request a quote
Email [email protected] with the house code EL-CLE-10974 and the quantity, or add the Colourwave colorimeter to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
