Cole Parmer – Stuart – Water distillation apparatus (Aquatron / WS-200)

The WS-200 cabinet-style water stills are available in either single or double-distilled water models — choose the double-distilled model for higher purity levels. The stills, constructed of borosilicate glassware coupled with silica-sheathed heaters enclosed in a protective cabinet, deliver pyrogen-free distillate of the highest purity from virtually any raw water supply. The condenser is designed to make sure droplets of distilled water remain in contact with the cooling coil for an extended period ensuring maximum energy transfer and production of cold distilled water for immediate use.

All-glass construction allows for rapid descaling using strong mineral acids. The units can be safely and easily cleaned without dismantling the glassware. A large-bore stopcock with PTFE key is fitted for easy draining of chemicals after cleaning.

Safety features include flow sensor, overtemperature thermostat, acrylic screen, cabinet lid, and screw threads on all water connections. In addition, a reservoir water level sensor automatically switches off the heaters and coolant water supply when the reservoir is filled with distilled water. It automatically restarts the still when the distilled water level drops in the reservoir.

Cole Parmer – Stuart – Water distillation apparatus (Aquatron / WS-200)

Key Features

  • Fully automatic operation
  • High purity pyrogen-free output
  • Low-temperature distillate
  • Operates from any raw water supply
  • Reservoir level control
  • Simple conversion to pre-treated feed
  • Supplied with wall mounting bracket
  • Safety features allow unattended operation
  • Simple to clean


  A4000 A8000 A4000D
Output, lhr 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, (20-700kPa) 2 L/min, 3-100psi, (20-700kPa) 2 Lmin, 3-100psi, (20-700kPa)
Electrical supply 220 or 240V, 50-60Hz, single phase 220 or 240V, 50-60Hz, single phase 220 or 240V, 50-60Hz, single phase
Max. power, kW 3 6 6
Dimensions (w x d x h), mm 550 x 240 x 410 550 x 240 x 410 550 x 410 x 410

What’s included:

  • wall-mounting bracket (for single distilled models only)
  • reservoir water level sensor
  • hose kit
  • funnel
  • power cord with stripped ends
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