Pro-Nitro M Kjeldahl Steam Distillation unit

Name of the equipment

Pro-Nitro M Kjeldahl Steam Distillation unit

Brand

J.P. Selecta

Description

Pro-Nitro M Kjeldahl Steam Distillation unit is used for determination of organic nitrogen and protein according to Kjeldahl Method. It offers automatic NaOH dosage and temporize stop. It provides a sample steam distillate and an alkali adding in safety way. The unit have the following systems:

• The steam generator

Generates steam from the water reservoir placed at the top of the unit.

The steam generator includes two safety devices:

• Safety thermostat: Cuts the electrical power to the heater when overtemperature is detected on the steam generator. (Probably for poor level of water)
• Pressure switch: Cuts the electrical power to the heater when there is an over-pressure on the steam generator.

Also includes a conductivity sensor to keep a constant level of water in the steam generator.

• The distillation circuit

It is made mainly by two glassware parts:

• The splash protector: Its special design avoids that NaOH splash reach the cooler glassware.
• The cooler: It condensates the steams that are leaking from the sample. This glassware is cooled by a water circuit that comes from an external tap. An internal valve opens and closes this circuit automatically.
• NaOH addition system

Composed by a properly specified pump to dispense NaOH directly to sample tube when distillation is running.

Specification

Measuring range: from 0.2 to 200 mg of Kjeldahl Nitrogen.

Programmable distillation time.

Nitrogen recovery: >99.5%

Distillation speed: from 35-40 ml/minute

Typical distillation time: from 7-10 minutes.

Water consumption rate: from 80-100 litres/Hr.

Steam generator water consumption: 2.5L/ hr

Water reservoir for steam generator: 6 L

NaOH reservoir: 2 L

Applications

Kjeldahl Distillation Unit can be widely used in areas of food & beverage industries, feeding stuff production, farming, soil fertilizer, environment monitoring, agriculture, scientific research, education, quality control and so on, performing either the nitrogen and protein analysis.

Contact information

Equipment-in-charge: Miss Siu Ka Chai

Email: ka-chai.siu@polyu.edu.hk

Office: TU305