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Alto™ I Type 1 Ultrapure Water System

Avidity Science

Alto™ I Type 1 Ultrapure Water System

The Avidity Science Alto™ I provides 18.2MΩ·cm Ultrapure water on demand. The integrated dispenser or optional remote dispenser provides Type 1 water at up to 2 litres per minute. The output can either be continuous or volumetrically dispensed. TOC monitoring is critical as contaminants can affect results so a real-time TOC reading will provide absolute confidence in the water dispensed. Select the dispense rate required with the intuitive and simple software controls. The Alto™ I also has a quick-change, long-lasting consumable provided in the start-up package.

This compact Type 1 water system can be fed from a Geno™ II, Puro™ III or existing ringman / RO system. This range of bench-top or wall mounted water systems are specifically designed to save laboratory space while providing high-quality water that exceeds all reagent water quality standards through its state-of-the-art water purification technology.

Type 1 / Ultrapure Water Applications

The Alto™ I is suitable for Type 1 water usage of up to 120 litres per hour (adequate feed water must be available). Ultrapure Type 1 water should be reserved for demanding experiments that are sensitive to any ionic contamination, dissolved gases, organics and life science applications that depend on the additional removal of nucleases and pyrogens. These include:

  • Molecular biology
  • Electrochemistry
  • Critical Cell and Tissue Culture
  • Analytical Chemistry
  • DNA Sequencing
  • Genomics
  • Proteomics
  • Immunology
  • Pharmacology
  • Any Other Sensitive Applications


  • Fast dispense of ultrapure water – variable rate of up to 2 litres per minute
  • Option of remote and/or integrated dispenser
  • Intuitive, icon-based, interactive user interface with touch screen
  • Mount on bench, under bench or on the wall
  • Comprehensive monitoring of water quality including TOC (Total Organic Carbon)
  • Low Endotoxin, RNase, DNase and Protease option (UF Model) available
  • Volumetric and drop by drop dispensing

Sustaining Environment and Budget

An energy-saving mode will automatically engage when the system is not in use and will periodically re-circulate the water to maintain quality. Our Endure™ deionisation packs contain more than 3 litres of resin, providing optimum longevity.

What is Ultrapure Water?

For the most demanding applications Type 1, or Ultrapure water, with a resistivity of 18.2MΩ·cm is required. Water with a resistivity of 18.2MΩ·cm can still contain organic contaminants, endotoxins and nucleases which do not impact on resistivity values. It is therefore essential to employ other technologies to eliminate these i.e. Ultraviolet (UV) Photo Oxidation and Ultrafiltration (UF). Equipment producing this quality of water is frequently referred to as a polisher and can be fed from a localised Reverse Osmosis system or a centralised ringmain. A dual wavelength ultraviolet (UV) light (185nm and 254nm) ensures bacteria and organic levels are kept at a very low level. An ultrafilter (UF) can also be combined to produce DNase/RNase free water.

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