VAPODEST® - Distillation Systems

The VAPODEST® range for fast distillation includes instruments with different degrees of process automation: from the simple VAPODEST® 200 to the fully automatic distillation and titration system VAPODEST® 500 carousel (with autosampler as an option), with the option to control via personal computer.

 

VAPODEST® 200: Manual sample dilution, manual filling of receivers, manual titration, manual removal of sample waste, manual calculation of results, manual sample exchange

 

VAPODEST® 300: manual filling of receivers, manual titration, manual calculation of results, manual sample change

 

VAPODEST® 400: Manual titration, manual calculation, manual sample change

 

VAPODEST® 450: Manual titration, manual sample change, computer calculations via EXPORT data

 

VAPODEST® 500: Fully automatic, manual sample change

 

VAPODEST® 500 carousel: Fully automated system for up to 20 samples

 

 

 

Vapodest lineup

Vapodest 200

The basic model of the series. The system configuration allows automatic alkaline addition, as well as programming of the steam generator capacity, reaction time and distillation time.

 

Vapodest 300

The very important function of the system is the removal of the sample residuals from the reaction vessel into the waste container after the end of the distillation. The waste disposal time is programmable. In addition Vapodest 300 is equipped with an extra pump for automatic water dilution of the sample.

 

Vapodest 400 and Vapodest 450

These models enable fully programmable distillation process. A boric acid filling function is added to the collection vessel. The Vapodest 450 can also be delivered with connected external titrator. When the distillation process is finished the titration to the end point will automatically start and the display will show the amount of solution used for the titration and the pH value. This way Vapodest 450 carries out the 2nd and 3rd steps of the Kjeldahl analysis.

 

Vapodest 50s/50s carousel

Fully automatic distillation system with integrated titration unit and PC control. Programming, monitoring, data processing, result calculation and documentation is done with Vapodest Manager software. The optional interface for the connection of the scales allows fast entry of the original sample weight into the instrument. The Vapodest 50s carousel is supplied with automatic sampler and carousel with 20, 16 and 12 extraction tubes.

 

Technical parameters

Specification VAP 200 VAP 300 VAP 400 VAP 450 VAP 50s/50s carousel

Distillation time, min. 2-4 2-4 2-4 2-4 2-4

Recovery rate, % > 99.5 > 99.5 > 99.5 > 99.5

Reproducibility, % ± 1 ± 1 ± 1 ± 1 ± 1

Nitrogen detection limit, mg 0,1 0,1 0,1 0,1 0,1 0,1

Cooling water flow, l/min. 2/5/7 2/5/7 2/5/7 2/5/7 approx. 5

Cooling water pressure, bar 0.5 - 6 0.5 - 6 0.5 - 6 0.5 - 6 0.5 - 6

Voltage, V 230 230 230 230 230

Frequency, Hz 50/60 50/60 50/60 50/60

Power, W 2200 2200 2200 1600/1830

Weight, kg 35 37 38 38 37/198

Dimensions (WxHxV), mm 527x390x697 527x390x697 527x390x697 440x340x690/

1010x670x1655

Comparative characteristics of Vapodest distillation systems

Characteristics VAP 200 VAP 300 VAP 400 VAP 450 VAP 50s/ 50s carousel

Steam generator with variable capacity + + + + +

Automatic water sample dilution

+ + + +

Automatic filling of collecting vessel with boric acid

 

+ + +

Automatic reagent addition (alkaline) + + + + +

Programming of reaction time + + + + +

Programming of distillation time + + + + +

Automatic removal of sample remainders

+ + + +

Sleep mode + + + + +

Optical and audible alarm + + + + +

Preset methods + + + + +

User methods + + + + +

Possibility to connect level sensors + + + +

External titrator

 

 

+

Built-in titration unit

 

 

 

+

Connection of external devices + + + + +

Automatic sample feeder (autosampler) connection

 

 

 

+

Equipment of the Vapodest distillation systems

Specification VAP 200 VAP 300 VAP 400 VAP 450 VAP 50s/ 50s carousel

Hose set for connection + + + + + +

Test tube KTG 250 + + + + +

Buffer solutions pH 4 and pH 7

 

 

+ +

Electrolyte solution KCl

 

 

+ +

pH electrode

 

 

 

+

External automatic titrator with pH electrode

 

 

+

Years of experience in Kjeldahl analysis

C. Gerhardt specializes in the development and production of analytical systems for nitrogen/protein determination by the Kjeldahl method. The experience of top-class experts and the latest technology are combined in the new, unique range of VAPODEST® steam distillation units.