When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Miniature mass spectrometer - Wikipedia

   en.wikipedia.org/wiki/Miniature_mass_spectrometer

   A miniature mass spectrometer (MMS) is a type of mass spectrometer (MS) which has small size and weight and can be understood as a portable or handheld device. What it means to be portable and a set of criteria by which portable and miniature mass spectrometers can be assessed have been discussed in detail. [ 1 ]

3. Spectrophotometry - Wikipedia

   en.wikipedia.org/wiki/Spectrophotometry

   Table-top spectrophotometer Beckman IR-1 Spectrophotometer, c. 1941 Beckman Model DB Spectrophotometer (a double beam model), 1960 Hand-held spectrophotometer used in graphic industry [1] Spectrophotometry is a branch of electromagnetic spectroscopy concerned with the quantitative measurement of the reflection or transmission properties of a ...

4. Optical spectrometer - Wikipedia

   en.wikipedia.org/wiki/Optical_spectrometer

   If the instrument is designed to measure the spectrum on an absolute scale rather than a relative one, then it is typically called a spectrophotometer. The majority of spectrophotometers are used in spectral regions near the visible spectrum. A spectrometer that is calibrated for measurement of the incident optical power is called a ...

5. Infrared spectroscopy - Wikipedia

   en.wikipedia.org/wiki/Infrared_spectroscopy

   Infrared spectrophotometer used to analyze the diethyltoluamide insect repellent, 1960 US Food and Drug Administration scientist uses portable near infrared spectroscopy device to detect potentially illegal substances. Infrared spectroscopy is a simple and reliable technique widely used in both organic and inorganic chemistry, in research and ...

6. Spectronic 20 - Wikipedia

   en.wikipedia.org/wiki/Spectronic_20

   Developed by Bausch & Lomb and launched in 1953, the Spectronic 20 was the first low-cost spectrophotometer. [5] It rapidly became an industry standard [7] due to its low cost, durability and ease of use, [8] and has been referred to as an "iconic lab spectrophotometer". [9] Approximately 600,000 units were sold over its nearly 60 year ...

7. X-ray fluorescence - Wikipedia

   en.wikipedia.org/wiki/X-ray_fluorescence

   This type of instrument is commonly used for portable quality control screening applications, such as testing toys for lead (Pb) content, sorting scrap metals, and measuring the lead content of residential paint. On the other hand, the low resolution and problems with low count rate and long dead-time makes them inferior for high-precision ...