Required Minimum Specifications.pdf

Wiped-Film Short Path Molecular Still

Required Minimum Specifications

This requirement is for a laboratory wiped film short path (WFSP) distillation system which shall include:

• feed flask;

• feed pump;

• heating for evaporator, cooling for condenser;

• collection vessel for residue and distillate;

• vacuum system;

• mobile frame;

• platform for the system;

Features, Components, Accessories, Modules, Software and/or Services to be included:

• Jacketed glass WFSP body with internal condenser;

• Variable speed, direct drive for the wiper;

• Wiper speed controller with digital display;

• Feed flask and metering pump to feed sample to the wiped film evaporator;

• Heater for evaporator with temperature controller and digital display;

• Heating/cooling fluid re-circulator for internal condenser with temperature controller and digital display;

• Receivers for residue and distillate;

• Rotary vane and diffusion vacuum pump system with cold trap, vacuum gauge, and vacuum regulator;

• Cooling for vacuum's cold trap;

• Components are mounted on frame and platform with casters and leveling feet.

• WFSP Still: Jacketed borosilicate glass body; evaporator surface area at least 0.03 m2.

• Feed flask, 1L or larger, with valve and adapter for degassing.

• Feed pump: 0-1.0L/h; flow control with digital display; adapter to connect to the WFSP evaporator.

• Wiper assembly: direct drive, variable speed controller up to 500 RPM; digital speed display;

PTFE wiper blades.

• Evaporator heater with temperature control and digital display; Delivers heat up to 300oC.

• Internal condenser heater/cooler circulator with temperature controller and digital display;

temperature range -25 to 180 degrees C.

• Distillate and residue receivers with same volume as the feed flask.

• Vacuum system: rotary vane pump and diffusion pump pressure to 0.001 torr.

• Digital vacuum gauge measuring range 0.001 to 1000 torr.

• Bleed valve to regulate vacuum pressure.

• Cold trap for vacuum.

• Provision for cooling the cold trap, -60 degrees C or better.