double-beam spectrophotometer

double-beam spectrophotometer

[¦dəb·əl ¦bēm spek·trō·fə′täm·əd·ər]
(spectroscopy)
An instrument that uses a photoelectric circuit to measure the difference in absorption when two closely related wavelengths of light are passed through the same medium.
References in periodicals archive ?
This method utilizes a double-beam spectrophotometer which records the absorption differences between a blank and test solutions of the substance of interest to draw its spectrum.
Providing a UV-visible double-beam spectrophotometer equipped with an integrating sphere for analyzing solid samples.
The capacity in the retention of malachite green was followed by using visible spectroscopy, determined in a Perkin-Elmer Model 124 Double-Beam Spectrophotometer.
The detector performance of the Cary 500i is up to ten times better than existing technology, and offers the highest photometric capability of any large-scale commercial double-beam spectrophotometer.
Contract notice: Supply of double-beam spectrophotometer uv / vis.
As a result, the Cary 500i boasts detector performance up to ten times better than existing technology, and offers the highest photometric capabilities of any large-scale commercial double-beam spectrophotometer.
The Cary 500i, which boasts detector performance up to ten times faster than existing technology, offers the highest photometric capabilities of any large-scale commercial double-beam spectrophotometer.
You have two double-beam spectrophotometers for the price of one," says Gomez.