Kjeldahl analyser

Rowe Scientific has introduced the UDK142 steam distillation apparatus from Velp Scientifica. The device is used for separating volatiles from non-volatile substances.

The most common application is for the Kjeldahl determination of nitrogen in protein analysis. The analyser is also useful for determining ammonia, nitrogen, nitrates (after reduction), phenols, volatile fatty acids, cyanides, sulfur dioxide, alcohol content and other analytes.

A sample of the features includes: a steam generator that generates steam safely as it does not produce steam under pressure and can perform fast distillations or slow distillations (useful for distillations of analytes such as phenols); connection to various auto-titrators as well as other peripheral devices, to fully automate the process; accepting multiple size tubes and flasks.

The device can perform a distillation in three minutes for a standard Kjeldahl distillation compared to over an hour using the traditional Kjeldahl method, with a reproducibility of ±1%, recovery rate of 99.5% and a limit of detection of 2 mg nitrogen.