Single Beam Microprocessor UV-VIS Spectrophotometer
Product Code : EL-LI-10790
Quick answer: A UV-VIS spectrophotometer measures how much ultraviolet or visible light a solution absorbs at a chosen wavelength, used to find concentrations through the Beer-Lambert law. This single beam microprocessor model covers 195-1000 nm with a 2 nm bandwidth, deuterium and tungsten halogen lamps and a 4-position cuvette holder. Lab Exports manufactures it in Delhi for school, college, research and industrial laboratories.
Specifications
| Parameter | Value |
|---|---|
| Wavelength range | 195-1000 nm |
| Spectral bandwidth | 2 nm |
| Wavelength accuracy | ±0.5 nm |
| Wavelength repeatability | ±0.3 nm |
| Wavelength resolution | 0.1 nm |
| Stray light | Less than 0.1% at 320 nm |
| Readability | ±1 count |
| Light sources | Tungsten halogen lamp and deuterium (D2) lamp |
| Detector | Wide-range silicon photodiode |
| Optics | Mirror optics, 1200 grooves/mm grating |
| Wavelength setting | Manual calibration and selection |
| Sample holder | 4-position, for 10 mm path length cuvettes |
| Measurement modes | Absorbance, % transmission, concentration |
| Display | Single-line LCD |
| Keyboard | 4-key soft-touch membrane |
| Interface | RS-232C and printer |
| Power | 230 V ±10%, 50 Hz AC |
| Dimensions (L x B x H) | 420 x 350 x 240 mm |
| Weight | Approx. 10 kg |
How the spectrophotometer is used
Light from the deuterium lamp (ultraviolet) or the tungsten halogen lamp (visible and near infrared) is narrowed to a 2 nm band by the grating, passed through the sample in a 10 mm cuvette and measured by the photodiode. The instrument reports transmission (%T) and absorbance, A = log10(100/%T). By the Beer-Lambert law, A = epsilon x c x l, absorbance is proportional to concentration c for a fixed path length l, so a calibration line from standards gives the concentration of unknowns.
- Switch on and allow the lamps to warm up and stabilise.
- Set the analytical wavelength, usually the absorption maximum of the compound.
- Place a solvent blank in the holder and set zero absorbance.
- Measure a series of standards and then the samples, moving each cuvette into the beam with the 4-position holder.
- Read absorbance or concentration on the display, or send results to a computer or printer through the RS-232C interface.
Use the quartz cuvettes below about 340 nm, where glass absorbs ultraviolet light; the glass cuvettes serve the visible range. Typical work includes nitrate, phosphate and iron determinations in water, protein and nucleic acid readings at 280 and 260 nm, reaction kinetics and absorption spectra of dyes.
Key features
- 195-1000 nm range covering ultraviolet, visible and near infrared
- 2 nm bandwidth with ±0.5 nm wavelength accuracy and ±0.3 nm repeatability
- Deuterium and tungsten halogen lamps
- Mirror optics with a 1200 grooves/mm grating and silicon photodiode detector
- 4-position holder for 10 mm path length cuvettes
- RS-232C and printer interfaces, with software included
Supplied with the instrument
- 2 quartz cuvettes, 10 mm path length
- 4 glass cuvettes, 10 mm path length
- Software
Documentation and supply
Installation instructions and a manual are supplied with the instrument. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the UV-VIS spectrophotometer at its works in Laxmi Nagar, Delhi, and supplies it to school, college, research and industrial laboratories in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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The full range is in the Laboratory Instruments section of the Laboratory Equipment range.
Frequently asked questions
What is the wavelength range of this UV-VIS spectrophotometer?
195 to 1000 nm, with a 2 nm spectral bandwidth and 0.1 nm resolution.
Which cuvettes are supplied?
Two quartz and four glass cuvettes for the 10 mm path length holder.
Can results be sent to a computer?
Yes. It has an RS-232C computer interface and a printer interface, and software is included.
What is the price of the UV-VIS spectrophotometer?
Prices are not published on the website. Add the UV-VIS spectrophotometer to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-LI-10790 and the quantity, to receive a quotation.
Does Lab Exports manufacture the UV-VIS spectrophotometer?
Yes. Lab Exports manufactures the UV-VIS spectrophotometer at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-LI-10790.
Request a quote
Email [email protected] with the house code EL-LI-10790 and the quantity, or add the UV-VIS spectrophotometer to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
