Lovibond comparator
Encyclopedia
The Lovibond comparator is a type of colorimeter
made in Britain
by The Tintometer Ltd
. It was invented in the 19th century by Joseph Williams Lovibond
and updated versions are still available.
until the nearest possible match is found. The concentration
of the sample is indicated next to the disc selected.
The result is only an approximation but the comparator is very useful for field work because it is portable, rugged and easy to use. If a more exact measurement is required the sample will be sent to a laboratory for further testing.
Colorimeter
For articles on Colorimeter see:* Colorimeter * Tristimulus colorimeter...
made in Britain
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
by The Tintometer Ltd
Tintometer
The Tintometer Limited was founded in 1885 by Joseph Williams Lovibond, the son of a prominent brewery owner in Greenwich, London. J.W. Lovibond developed the world's first practical colorimeter as a means of ensuring the high quality of his beer...
. It was invented in the 19th century by Joseph Williams Lovibond
Joseph Williams Lovibond
Joseph Williams Lovibond was a British brewer who developed the world's first practical colorimeter as a means of ensuring the high quality of his beer. He was the originator of the Degrees Lovibond scale.-Biography:...
and updated versions are still available.
Description
The sample to be tested is mixed in a glass tube with a colour reagent. The glass tube is inserted in the comparator and compared with a series of coloured glass discsFilter (optics)
Optical filters are devices which selectively transmit light of different wavelengths, usually implemented as plane glass or plastic devices in the optical path which are either dyed in the mass or have interference coatings....
until the nearest possible match is found. The concentration
Concentration
In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Four types can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration...
of the sample is indicated next to the disc selected.
The result is only an approximation but the comparator is very useful for field work because it is portable, rugged and easy to use. If a more exact measurement is required the sample will be sent to a laboratory for further testing.