Cuvettes and Path Length: Choosing the Right Cell
Cuvette material and path length determine which wavelengths can be measured and set the practical concentration range for any UV-Vis assay.
구성요소·하드웨어
-
-
Sapphire Windows and Optical Materials
Sapphire combines exceptional hardness and broad UV-to-NIR transmission with chemical inertness, making it the ideal optical window for harsh inline process environments.
-
The Xenon Flash Lamp
Xenon flash lamps deliver intense broadband light in microsecond pulses, enabling stable low-noise measurements in modern spectrophotometers.
-
Monochromator and the Czerny-Turner Design
A monochromator isolates a narrow band of wavelengths from broadband light; the Czerny-Turner layout is the industry standard for compact UV-Vis instruments.
-
Diffraction Gratings Explained
Diffraction gratings use microscopic periodic grooves to disperse light into its component wavelengths, forming the heart of modern spectrophotometers.
-
Detectors: Silicon Photodiode vs. CMOS Array vs. InGaAs
Detector choice determines spectral range and measurement speed; silicon photodiodes, CMOS arrays, and InGaAs devices each serve distinct analytical needs.
-
Tungsten-Halogen vs. Deuterium Lamps
UV-Vis spectrophotometers use two complementary light sources. Here is why both are needed and how the instrument switches between them.