Overview
The Batch Crystallizer apparatus is a jacketed glass vessel in which a saturated solution is cooled in a controlled manner to induce supersaturation and crystallisation. An agitator maintains suspension while temperature is lowered according to a programmed cooling profile, and crystal nucleation and growth are studied by sampling at intervals. Students measure crystal yield, crystal size distribution, and purity at different cooling rates and agitation speeds. The batch crystallizer provides fundamental understanding of nucleation control, crystal habit modification, and yield optimisation essential for pharmaceutical, chemical, and food industry crystallisation operations.
Specifications
| Vessel capacity | 5 to 20 litres |
| Vessel material | borosilicate glass, jacketed |
| Agitator | variable speed, 50 to 500 RPM |
| Cooling | chilled water or thermostat bath |
| Temperature range | 5 to 80 degrees C |
| Temperature controller | PID type |
| Sampling valve | bottom drain |
| Power supply | 220V AC, 50 Hz |