Flow injection analysis first appeared in the 1970’s and has evolved into a larger group of automatic chemical analysers. The current technologies in this group are: Flow Injection Analysis (FIA) Segmented Flow Analysis (FIA) Discrete Analysers   Different...

History of the AAS In 1940 Alan Walsh was a young physicist working at the British Non Ferrous Metals Laboratories during World War II. His work included determination of metal composition from the debris of enemy bombers. He developed a number of methods for rapid...

For analytical spectroscopy, there are two main categories of instruments – based on either atomic absorption or atomic emission. An example of an instrument using atomic emission is an Inductively Coupled Plasma (ICP) Spectrometer, whilst an example of one...

Zeta potential indicates the stability of a colloidal dispersion. A colloid is a particle, 10-8 to 10-6m in size which when mixed in a dispersing medium is termed a colloidal dispersion. Aerosols (solid or liquid colloids) in a gas (dispersing medium), emulsions...

A typical spectrometer will process  wavelength spectra to provide some measure of the analytical makeup of a sample. Within that spectrometer will be some separating device such as a monochromator or polychromator to measure the strength of the wavelength of...

To measure the quantity of a metal in a sample, the metal must first be dissolved completely into a solution (called an analyte) before it can be analysed using AA (atomic absorption) or ICP Inductively Coupled Plasma. For semi quantitative analysis, hot plate...

The history of particle counting can be traced back to the 1950’s when Wallace Coulter, an American electrical engineer and inventor discovered a method to count microscopic particles suspended in a fluid. Coulter found that individual particles moving through...