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Page 119 Stuart® Catalogue
Model Description
A4000 Aquatron water still, 4 l/hr, single distilled, 240V
A4000/220 Aquatron water still, 4 l/hr, single distilled, 220V
A8000 Aquatron water still, 8 l/hr, single distilled, 240V
A8000/220 Aquatron water still, 8 l/hr, single distilled, 220V
A4000D Aquatron water still, 4 l/hr, double distilled, 240V
A4000D/220 Aquatron water still, 4 l/hr, double distilled, 220V
Ordering Information
Water Stills, Aquatron
Aquatron® Models
The pH of distilled water
Pure water, whether from a still, deioniser or reverse osmosis system, is an excellent solvent and will quickly dissolve
carbon dioxide from the air to form a very dilute solution of carbonic acid. In a water still this solution can form as
the steam liquefies in the condenser, resulting in a distillate output with a pH of 5 - 6.5. This is a normal level which
has little effect on most laboratory procedures. A slightly acidic pH value does not mean that the water is grossly
contaminated as a carbon dioxide level of less than one part per million will cause a pH of 5. If necessary the carbon
dioxide may be removed by boiling the water. It is then vital to protect the water from the air otherwise the carbon
dioxide will be re-absorbed quickly.
A4000
Produces 4 litres/hour single distilled water. Can operate standing on the laboratory bench or be wall mounted.
Supplied with easy to fit wall mounting bracket.
A8000
Produces 8 litres/hour single distilled water, ideal for the larger laboratory. Glassware is enclosed in the same cabinet
as the A4000 so can operate standing on the laboratory bench or be wall mounted. Supplied with easy to fit wall
mounting bracket.
A4000D
Produces 4 litres/hour double distilled water for higher purity levels. The first stage distillation is carried out in a
glassware set mounted at the front of the cabinet allowing easy access for descaling. The distilled water is fed to a
second set of glassware mounted at the rear and distilled a second time. The rear glassware is fitted with a level sensor
to ensure the heater is only activated when there is sufficient water in the boiler.
Stuart® Catalogue
Technical Specification
A4000 A8000 A4000D
Output, l/hr 4, single 8, single 4, double
pH 5.0 – 6.5 5.0 – 6.5 5.0 – 6.5
Conductivity, µScm-1 1.0 – 2.0 1.0 – 2.0 1.0 – 1.5
Resistivity, mOhm-cm 0.5 – 1.0 0.5 – 1.0 0.7 – 1.0
Temperature, °C 25 - 35 25 - 35 25 - 35
Pyrogen content* Pyrogen free Pyrogen free Pyrogen free
Water supply 1 l/min 3-100psi 2 l/min 3-100psi 2 l/min 3-100psi
(20-700kPa) (20-700kPa) (20-700kPa)
Electrical supply 220 or 240V, 50-60Hz, 220 or 240V, 50-60Hz, 220 or 240V, 50-60Hz,
single phase single phase single phase
Max. power, kW 3 6 6
Dimensions, mm (w x d x h), 550 x 240 x 410 550 x 240 x 410 550 x 410 x 410
IP Rating 21 21 21
*Care is required to produce pyrogen free water and the output should be tested before use.