Food Sulfur Dioxide Distillation Apparatus

The Food Sulfur Dioxide Distillation Apparatus processes herbal medicines via distillation according to pharmacopoeia-specified testing methods. Sulfite compounds in the sample are converted to sulfur dioxide through acid treatment, then carried by a nitrogen stream into an absorption flask containing hydrogen peroxide. Hydrogen peroxide oxidizes these compounds into sulfate ions, which are then quantified via acid-base titration to calculate sulfur dioxide residue levels in herbal materials and preparations.

Strictly adhering to pharmacopoeia requirements, this integrated unit combines heating, distillation, water circulation, and nitrogen purging functions. It processes 3-6 samples (including blanks and replicates) simultaneously, enhancing testing precision while reducing operational time.

The Food Sulfur Dioxide Distillation Apparatus series complies with Method 1 of General Rule 2331 in Part IV of the Pharmacopoeia of the People's Republic of China, designed to determine residual sulfur dioxide in medicinal materials or slices treated with sulfur fumigation.

This instrument is primarily applicable to various Chinese herbal medicine manufacturers, research institutes, and food production enterprises related to sulfur fumigation for routine sulfur dioxide residue determination.

The Food Sulfur Dioxide Distillation Apparatus mainly consists of a heating module, distillation module, and nitrogen blowing module. The heating module features three-speed heating rate control (high, medium, low) for precise heating efficiency via the control panel. The distillation module utilizes high borosilicate glass material, offering excellent heat resistance and durability. The nitrogen blowing module supports connection to an external nitrogen generator or cylinder, equipped with a high-precision gas flow meter to strictly regulate nitrogen blowing rate.

• Sealed infrared ceramic heating jacket ensures excellent heat retention and high heating efficiency while preventing equipment damage from liquid spills.

• Full touchscreen control with intuitive human-machine interface for simple, easy operation.

• Heating units feature independent temperature control with adjustable power settings.

• Heating countdown function with audible alerts and automatic shutdown.

• Magnetic stirring device ensures uniform sample mixing during experiments.

• Equipped with an independent precision nitrogen flow control system. Compatible with nitrogen generators.