AQUA 40.00-Basic Module   

Water content of liquid samples and gases

The AQUA 40.00 Basic Module is the essential device for microcoulometric determination of water content according to Karl-Fischer-Titration in liquid samples and gases.

This coulometric titration is based on the electrochemical generation of the iodine needed for the determination. There is no need for any working with titer of KF-reagent and their adjustment.

The optimized measuring cell allows very low background drift and short preconditioning times.

Therefore the coulometric method can be used as a down to trace ppm-analysis. The sample to be analyzed is injected right into the measuring cell. The titration current is adjusted automatically and continuously to the amount of water. Short measuring times are realized.

Measuring cells without diaphragm can be used. Many applications do not require a diaphragm, so only one coulometric reagent is needed. All customary KF-reagents are suitable.

The basic module can be upgraded with additional modules for different sample types.

  • Features
  • Specifications
  • Application
  • Acessories
  • Consumables
  • Download
  • Ordering

Advantages

  • Infinitely variable electrolysis current for very fast analysis
  • Adjustment of titration rate to current amount of water to be titrated
  • Low background drift
  • All customary KF-reagents are suitable
  • Easy-to-use software
  • Defined methods for measurement
  • Status display through large-scale colouration
  • Additonal heating modules can be used

Extension modules

  • Vario Head Space Module 
  • Universal module for all kind of samples: solids, pasty substances and oils 
  • Closed-loop gas circulation, no dried additional carrier gas is necessary 
  • For samples that change the water content if in contact with ambient air 
  • Heating procedure with definable temperature programs 
  • Analysis of closed sample vials for hygroscopic samples 
  • Suitable for 2 R - 50 R vials 
  • Automatic identification of sample rack

Oil Module and Solid Module

  • Gas extraction - the ideal method to handle oils, solids and pasty substances 
  • Heating procedure with definable temperature programs 
  • Closed-loop gas circulation, no dried additional carrier gas is necessary 
  • Heating module of oils is used for oil volumes up to 20 ml 
  • Heating module of solids is used for very small sample amounts (below 10 µg)

High Temperature Oven Module

  • This oven can heat out the sample at temperatures ranging up to 1300 °C !
  • A special valve system transports the sample into the oven without interrupting the carrier gas circulation 
  • Internal drying of carrier gas

LPG/LNG Module

  • Designed for an easy and accurate determination of water in liquefied and gaseous samples such as LPG and LNG 
  • Suitable for all types of gases - flammable, inert as well as changing mixtures 
  • Determination of pressure in the sample loop, so no additional rinsing gas is needed 
  • Compact and portable device in combination with carrying case for on-site measurements

 

 

Technical specifications

Measuring range: 1 µg – 100 mg, absolute
Resolution: 0.1 μg
Reproducibility: ± 3 µg for 10…1000 µg 3 % for > 1 mg
Generator current: infinitely variable from 0 up to 250 mA
Sample volume: 0.01 – 20 ml (direct injection)
Volume of reagent
in measuring cell:
100 ml
Analysis duration: 5 min (dependent on water content)
Results in: μg, μg/l, mg/l, ppm, %, mC, customized with formula generator
Indication: biamperometrical, polarization with square-wave voltage
Power supply: 115 or 230 V, 50 – 60 Hz
Interface: RS 232
Balance connection: RS 232
 

Applications

  • Solvents
  • Oils and fats
  • Fuels, biodiesel
  • Hydraulic and brake fluids
  • Gases

ordering information

 

Dimensions

Dimensions: RS 100 x 400 x 200 mm (W X H x D)
Weight: 5 kg

 

                AQUA 40.00 - Vario Headspace

                      Volumetric KF Titrator

 

            Aquamax KF Plus - ASTM D6304

                          TAN/TBN Titrator