Comparison : Item # 7954000001, 10-Position Complete Ammonia Distillation System
Item # 7954000002, 10-Position Complete Phenol Distillation System
Item # 7954100220A, 10-Position Midi-Dist Distillation System for 220 Volt (V) Ammonia Voltage
Item # 7954100220P, 10-Position Midi-Dist Distillation System for 220 Volt (V) Phenol Voltage