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membraPureModel Astacus² -Ultra Pure Water System

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Tailored for the production of ultra-pure water from permeate sourced from either reverse osmosis or deionized water, the Astacus² system is purpose-built for this application. Available in various configurations (Reagent, Analytical, and LifeScience), the Astacus² water purification system is designed to meet the specific demands of ultra-pure water for diverse applications. The Analytical version is equipped with a UV lamp to achieve low Total Organic Carbon (TOC) values, while the Life Science variant incorporates a UV lamp and Ultrafiltration Module for achieving both low TOC and low endotoxin values. Additionally, an optional integrated TOC sensor provides users the capability to continuously monitor TOC content online
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  • Besides that the Astacus² can be configured as bench top or bench-integrated system with external panel and wall mounted (with inclined display).
  • The μS-control checks the conductivity of feed water to protect the cartridges against inappropriate feed water.
  • If conductivity is too high the water flow will be rejected.

Ultra Pure Water production for perfect analysis

  • Compact housing
  • Big touchscreen
  • Remote service module
  • Menus and wizards easy to use and mistake avoiding
  • Fixed and flexible dispenser
  • Easy access for cartridge exchange

Resistivity/Conductivity

  • 18.2 MOhm x cm | 0.055 µS/cm; Type I

Production rate

  • max. 2 L/min

Total Organic Carbon (TOC)

  • 10 ppb (Reagent)
  • 5 ppb (Life Science)
  • 3 ppb (Analytical)

Perfect results with Water Purification Systems from membraPure
To deliver the best results for your analysis you need the highest water quality possible. With the “easy to operate” pure water and ultra pure water systems from membraPure you can select the model that cost efficiently produces laboratory-grade water. All our systems are Made in Germany.

Pure & Ultra Pure Water Purification Systems for all major lab applications

  • Benchtop, wall mounted (with inclined display) and bench-integrated configurations
  • Compact housing with small foot print
  • Fast & easy cartridge replacement
  • Easy-to-use software interface
  • Intuitive software
  • Up to 12 months trackable water quality values
  • Integrated TOC monitoring
  • Large touchscreen
  • Flexible and lockable dispenser

Bench integrated configuration (BI version)

To save valuable benchtop space the system can be ordered as BI configuration. The system will be installed underneath the work bench and only the display and dispenser are mounted on the wall.



To save valuable benchtop space the system can be ordered as wall mounted configuration. the whole system can be mounted on the wall with inclined display.

The TOC monitoring during production and intermittent measurements during non-use periods allows to check the organic content in water continuously. The TOC value is measured between 1 and 999 ppb and can be shown in the display to monitor organic impurities.

To be integrated into an ultra pure water system with a max, flow rate of 2 L/min. Point of use dispense arm with integrated control unit. Two joint to move it horizontally and vertically allowing to fill containers up to 55 cm height. Volumetric dosing of ultra pure water allows filling of containers without the attention of user, dosing eange 0.1 – 99 L, variable input and storage of values, after volume has been dispensed system goes back to standby.

Our dispenser allows the volumetric controlled dispensing of water with an increment of 0.1 L and a tap volume from 0.1 to 99 L. The system prevents overflow of containers and allows to dispense water without supervising.

The μS-control checks the conductivity of feed water to protect the cartridges against feed water of poor quality. If conductivity of the feed water is too high this water will be rejected and cannot influence the quality of the ultra pure water or harm the cartridge.

Validation documents for water purification systems.

  • bacteria: < 1 cfu/mL
  • dimensions, weight, power: 297 x 340 x 535 mm, 16-20 kg, 110 - 230 V
  • DNAse: < 5 pg/mL*
  • flow rate: 2 L/min, 1.5 L/min*
  • particulate: > 0.2 µm less than 1 particulate/mL
  • pyrogen (endotoxins): < 0.001 EU/mL*
  • resistivity: 18.2 MegaOhm/cm
  • RNAse: < 1 pg/mL*
  • total organic carbon (TOC): < 10 ppb reagent, < 5 ppb Life Science, < 3 ppb Analytical
  • ultra pure water quality: 0.055 µS/cm; Type I

*with Life Science model

Feed Water Requirements

  • feed water conductivity: < 10 µS/cm
  • inlet pressure: 0 to 1.5 bar
  • temperature: 5 to 25 °C
  • total organic content (TOC): < 50 ppb
  • type of feed water: reverse osmosis (RO) water or deionized (DI) water