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Spectrophotometers are analytical instruments used to measure the intensity of light at different wavelengths. They operate by passing a beam of light through a sample and measuring the amount of light absorbed or transmitted by the sample. Typically made from optical components such as lenses, prisms, and detectors, these devices are essential for quantitative analysis in various laboratory settings.
| Wavelength range | 200 nm to 1100 nm |
| Light source | Tungsten, deuterium, or LED |
| Detector type | Photodiode or photomultiplier tube |
| Accuracy | ±0.5% to ±2% depending on model |
| Sample types | Liquids, solids, and gases |
| Data output | USB, RS-232, or Ethernet |
When selecting a spectrophotometer, consider the wavelength range and the type of light source that best suits your application. It's important to specify the required accuracy and the types of samples you will be analyzing. Additionally, check for compatibility with data output formats for integration with existing laboratory systems. Certifications and compliance with industry standards may also be relevant depending on your specific needs.
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It measures the amount of light absorbed by a sample at specific wavelengths.
Spectrophotometers can analyze liquids, solids, and gases.
Calibration typically involves using standard solutions with known absorbance values.
Most spectrophotometers operate within 200 nm to 1100 nm.
Yes, many models offer USB or Ethernet connectivity for data transfer.
They are widely used in clinical diagnostics, pharmaceuticals, and environmental testing.