Water determination in gases by Aquamax KF PRO LPG (ASTM D 7995 – 19)

The Aquamax KF PRO LPG fulfils the requirements of the standard ASTM D 7995 – 19: Standard Test Method for Total Water in Liquid Butane by Liquefied Gas Sampler and Coulometric Karl Fischer Titration.

The Aquamax KF PRO LPG is designed for an easy and accurate determination of water in liquefied and gaseous samples such as LPG and LNG.

The new device combines coulometric Karl Fischer method with an unique gas evaporation and dosing procedure.

The Aquamax KF PRO LPG includes all features required for ppm level water in LPG and Gas including, the sulphur removal cartridge eliminating all side reactions and our sample loop principle allowing you to fully automate the measurements, up to 125 per day!

All Aquamax KF PRO LPG parts are totally enclosed making this system completely safe and robust for use in the demanding petroleum industry.

The unique ECH sample loop allows you to use the instrument in your laboratory with full automation, as a portable/field use analyzer or can be integrated in to your process as an on-line system.

Areas of Application


  • propane, propene, butane, butene, butadiene
  • ethylene oxide
  • chlorinated hydrocarbons, e. g. methylene chloride ,ethylene chloride, vinyl chloride

Analysis of refrigerants:

  • halogenated hydrocarbons

Analysis of permanent gases:

  • natural gas
  • technical gases
  • mixtures of test gases


  • Determination of moisture in liquefied and gaseous samples
  • Inlet pressure up to 200 bar/2900 psi
  • Determination of pressure in the sample loop
  • Automatic pressure regulation
  • Transfer line with direct injection
  • Automatic rinsing bypass and steps for rinsing
  • Measuring cell without diaphragm (only one electrolyte required)
  • Setting of application-specific methods
  • Avoiding of side reactions by sulphur trap
  • Type of result: µg, ppm (gas volume), Vppm, Mppm, Mol ppm by using the formula generator


Measurement method: Coulometric Karl Fischer titration
Sample: Pressurized gas sample (LNG, LPG)
Sample dosing: Pressurized bottle or
directly from the gas line
Pressure reducer: internal (with heating element)
Sample loop: 300 mL (gas)
Rinsing and dosing: 0 … 15 steps for each, adjustable
Measuring range: 1 μg … 100 %
Resolution: 0.1 ppm
Detection limit: 1 ppm
Power supply: 230 V/50 Hz; 115 V/60 Hz
Dimensions: 33 x 49 x 48 cm (W x D x H)
Weight: 24.0 kg
Device control: PC software
(PC not included in the scope of delivery)


Data sheet