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membraPure - Water Purification Systems - Aquinity² P35/P70

Type I water directly from tap water

Aquinity² P35/P70 versions have an independent tank from which RO water can be tapped (e.g. for glassware cleaning). The water quality from this tank depends on the feed water quality; in general the RO holds back 98% of all ions. The tank can be installed at the side or above the system or even underneath the bench.

Tapping of ultrapure water is done with our flexible but also lockable dispenser as incorporated in all membraPure ultrapure water systems. Built-in TOC monitoring is also available with the Aquinity² P35/P70 versions. Aquinity² P35/P70 is the perfect system for a medium-sized lab.

  • Permeate rate: 10 l/h
  • Resistivity: 18.2 MOhm x cm
  • Reservoir: 35 l or 70 l
  • Flow Rate UPW: 2 l/min
  • TOC
    • < 10 ppb (Reagent)
    • < 3 ppb (Analytical with UV)
    • < 5 ppb (LifeScience with UV and UF)
  • Endotoxins: < 0.001 EU/ml endotoxins (LifeScience)

Upgrade for Trace Analysis

Water has to be of the highest purity to detect traces of substances in analytics processes. With the upgrade option, all components are made of unfilled material. Tubing material is PTFE for minimal adhesion. Dead spaces are avoided and the recirculation pump is made of PEEK and stainless steel. The tap valve material is PVDF.


(only for Astacus² and Aquinity² P/E 35/70)

TOC monitoring during production and intermittent measurements during non-use periods enables a continuous check of the organics in the water. The TOC value is measured between 1 and 30 ppb and can be shown on the display to monitor organic impurities.


Our new automatic memTap allows the volumetric controlled tapping of water with a dispenser arm. The arm can be moved horizontally and vertically. Tap volume is preset in 0.1l steps. This system prevents containers overflowing and allows water to be tapped without supervision. The 3.5” display with touchscreen provides all relevant data at a glance.

Technical Specifications

Permeate Rate 10 l/h
Resistivity 18.2 MOhm x cm
Reservoir 35 l or 70 l
Flow Rare UPW 2 l/min
TOC < 10 ppb (Reagent)
< 3 ppb (Analytical with UV)
< 5 ppb (LifeScience with UV and UF)
Endotoxins < 0.001 EU/ml endotoxins (LifeScience)

Key Features

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

Process flow

Module Reagent Analytical LifeScience Analytical TI LifeScience TI
AAS yes yes yes yes yes
ICP yes yes yes yes yes
Low Level Applications yes yes yes yes yes
HPLC no yes yes yes yes
CE no yes yes yes yes
ICP-MS no yes yes yes yes
Cell Culture no no yes no yes
Gentics no no yes no yes
UV-Reactor no yes yes yes yes
Ultrafiltration (UF) no no yes no yes
TOC-Display no no no yes yes
Ultra pure water cartridge 190-0088 190-0088 190-0087 190-0088 190-0087
Filter Sterile 190-0013 190-0013 190-0013 190-0013 190-0013
Installation-Kit N/A N/A N/A N/A N/A
Dimensions (WxDxH) (mm) 504 x 680 x 535 504 x 680 x 535 504 x 680 x 535 504 x 680 x 535 504 x 680 x 535
Net Weight 25kg with empty tank 25kg with empty tank 25kg with empty tank 25kg with empty tank 25kg with empty tank

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membraPureSince 1993 we produce water purification systems. We have continuously expanded our activities on the analyzers. We are one of the top players in our core markets of water purification, TOC measurement, amino acid analysis and ion chromatography, offering an outstanding level of technology and quality such as EDI, post column derivatization with Ninhydrin and NDIR TOC detection.