Mass Spectrometers

Mass spectrometers offer performance, versatility, and flexibility, sometimes exceeding that of GC. They are applicable for quantitative analysis of organic and inorganic compounds. A small vapor sample is drawn into the instrument through an inlet leak. A mass spectrometer works by ionizing a sample and then propelling the ions into a magnetic field. This field deflects each ion in proportion to its charge/mass ratio and causes it to strike one of a number of collectors. The signal from each collector is directly proportional to the concentration of ions having a particularly mass. Ahlstrom in the Instrument engineers' handbook provides a detailed description of quadruple mass-filter and multicollector, magnetic-sector instruments.

Typical instruments can sample multiple streams with a concentration of eight to twelve components in less than 5 sec. Depending on the vendor and applications, a variety of configurations are possible to maximize sensitivity and utility.

Wavelength (microns) 1.5 2.0

- CH Aromatic

- CH Aldehyde

- OH Water

- OH Alcohol

- OH Phenol

- NH2 Amine

Wavelength (microns) 1.5 2.0

12,500 10,000

7500 5000

Wave number (cm-1)

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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