Important New Accessories for The M400 Spectrophotometer
05 February 2002 09:45
Camspec's M400 fibre-optic diode-array UV/Visible Spectrophotometer is now available with new accessories, adding enormous versatility. One important development is the use of a 1 metre pathlength flowcell, where the light passes down a capillary tube of sample as a continuation of the optical fibre. This increases the sensitivity of the system by a factor of 100, and can be used for discrete or continuous flow sampling. As Gordon Smith of Portsmouth Water points out: "This is a convenient and sensitive way of detecting and measuring the colour of drinking water in Hazen units."
Alternatively, the use of an ATR probe decreases the sensitivity of the spectrophotometer by a factor of 10,000, allowing absorbance measurements in situ on concentrated, undiluted samples. Dr Tony Moss, Camspec's Managing director, highlights the convenience of the technology: "With a fibre-optic lead length of up to 20 metres and an optional foot switch, the spectrophotometer need not even be within reach. Users can now perform QA/QC measurements directly on the production line, rather than taking samples back to the laboratory. Therefore, a very wide range of applications are possible."
At BASF in Newcastle-upon-Tyne, the touch screen version of the M400 spectrophotometer is used with a 10mm dip probe. According to Margaret Massingham of BASF: "Our operators are extremely pleased with this system, which gives us a fast, accurate and convenient method of testing cleaning processes. Calibration curves of known compounds in solvents methanol, ethanol and water are stored in the touch screen module. Samples are taken of these solvents in tanks during cleaning and, when the concentration of the target compound falls below 50ppm, the tank is considered to be clearn."
In a completely different environment, Netherlands company Analytico Milieu BV also use an M400T with 10mm dip probe for an application requiring analysis of organic carbon in soil samples.
Based in Cambridge, UK, Camspec are acknowledged experts in UV/Visible spectrophotometry, and their instruments can be found in laboratories in dozens of countries around the world.
For more information on this company:
Camspec - Manufacturer of UV/Visible Spectrophotometers and Accessories
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