Autostill™, Freshman 4

The Freshman 4 distillation unit offers the user an inexpensive all-glass still, designed for simplicity of operation. The unit produces a high-purity, pyrogen-free distillate at a rate of 4 litres/hr.

• Low cost
• Borosilicate glassware and silica sheathed heaters
• Open construction gives easy access to glassware and heaters
• Boiler thermostatically protected by external thermal cut-out
• High efficiency condenser ensures cool distillate

Specification
Distillate output  Production rate, litres/hr	4
Conductivity, µs/cm †	0.2
Minimum water supply pressure, kg/cm2	0.3
Water consumption, litres/hr	60
Dimensions (hxwxd), mm overall	530x520x130
Heaters, kW	2x1.5
Weight, kg	4.35
Electrical supply	230/240V, 50/60Hz 13 amp
† Conductivity at 25°C with dissolved CO2 removed from distillate. Any ultra pure water in contact with the atmosphere has a conductivity of 1-2 µs/cm and pH ˜5, due to a small amount of CO2 (0.5ppm) absorbed from the atmosphere. Deionisers and similar systems measure conductivity before the water contacts the atmosphere and absorbs CO2 (during collection and use). As distillates are already open to the atmosphere before measurements can be made, it is necessary to remove this CO2 to provide a comparable conductivity value.
Materials
Casing	Zinc coated steel
Finish	Stove epoxy polyester
Heaters	Silica
Boiler	Borosilicate glass
Condenser	Borosilicate glass

Cat. No.	Description
703-051	Freshman-4 distillation unit