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Type 1 (Ultrapure) Water

A typical ultrapure water or high purity lab water system has three stages: a pretreatment stage to produce purified water, a primary stage to further purify the water, and a polishing stage which is the most expensive part of the treatment process.

A number of organizations and groups develop and publish standards associated with the production of ultrapure water which have quantitative specifications that describe the level of purity for the water.  These specifications have been described by ASTM (American Society for Testing and Materials) D1193, ISO (International Organization for Standardization) 3696, and CLSI-CLRW (Clinical and Laboratory Standards Institute-Clinical Laboratory Reagent Water). The most commonly used standards for Laboratories is ASTM D1193-6.

Our systems can fulfill all these standards.

Type 1 (ultrapure) water or high purity lab water is used for critical lab applications:

  • HPLC
  • GC
  • AA
  • ICP-MS
  • Buffers
  • Culture media for mammalian cell culture
  • IVF
  • Reagents for molecular biology

​​ISO 3696 Water Specifications ​ ​ ​
​Type 1 (ultrapure) water
Resistivity (megohm-cm compensated to 25°C)​10.0
TOC (ppb)​N.A.
​Absorbance at 254 nm/cm optical path (A.U.)​<0.001
​Silica (mg/l)​<0.01
Dry residue after evaporating on heating at 110°C​N.A.


ASTM Standard Specification for Reagent Water ​ ​ ​ ​ ​ ​ ​ ​
​Type​µS/cmMΩ-cm​TOC µg/l (max.)​CI µg/l (max.)​Total Silica µg/l (max.)​Bac.growth cfu/ml (max.)​Endotoxin EU/ml (max.)
IA​0.055​18​50​1​3​10 / 1000​0.03
IB​0.055​18​50​1​3​10 / 100​0.25
​IC​0.055​18​50​1​3​100 / 10​0.25


 Evoqua Type 1 (ultrapure) water Systems:

System Advantages ​ ​

LaboStar™ PRO System


  • ​Highest Water Quality
  • Cost effective production of Type 1 water
  • Extremely compact Ultrapure water system that can be used on a laboratory  bench
  • Pressure reducer included
  • Simple module exchange via quick-release connections
  • Protective jacket at the end of the sterile filter
  • ​Ultrapure water circulation right into the dispenser for easy distribution
  • Whisper operation mode
  • Rapid and simple disinfection
  • Quality monitoring after each purification stage


LaboStar™ PRO TWF System


  • ​Same Advantages as the LaboStar Pro System
  • Tap Water to Ultrapure Water in one innovative System
  • Built-in 7 Liter storage tank
  • Optional 30 and 60l storage tanks are available 

Ultra Clear™ TP System


  • ​Bench top  or wall mounting
  • Space saving installation
  • Economical state-of-the-art purification technology
  • Energy saving operation mode
  • Automatic self-Cleaning/sanitization mechanism
  • ​​High resolution display
  • Simple and fast cartridge changes due to quick and easy access to the replacement parts
  •  Flexible Dispenser
  • More complex control

Ultra Clear™ TP TWF System


  • ​Ultrapure water production from municipal tap water
  • RNase-, DNase- and DNA-free Type 1 Water
  • ​Low running cost
  • Flexible Dispenser
  • More complex control

 Ultra Clear™ TP TWF EDI System

  • ​Uses IonPure continuous electrodeionization (CEDI) module
  • Technical features to economically produce purified and ultrapure water
  • ​24h energy saving option
  • Flexible Dispenser
  • More complex control

* ​ASTM is a trademark of the American Society for Testing and Materials
* CLSI is a trademark of the Clinical Laboratory and Standard Institute
* ISO is a trademark of the International Organization for Standardization