Sulfur Dioxide Distillation Apparatus

I. Instrument Introduction

This instrument is a dedicated instrument for national-standard food sulfur dioxide determination (and traditional Chinese medicine sulfur dioxide determination by the Chinese Pharmacopoeia method). It integrates heating, distillation, cooling circulation, nitrogen blowing, magnetic stirring, receiving and titration devices into one high-efficiency measuring instrument, achieving simple operation, automatic distillation, an attractive and practical design and energy and labor savings.

II. Application Fields

The instrument is a measuring device developed according to the legal determination methods of GB 5009.34-2022 "Determination of sulfur dioxide in foods" and the 2015 and 2020 editions of the Chinese Pharmacopoeia. It can batch-process up to 4 samples at one time, with automatic timed reflux and automatic nitrogen blowing.

It is suitable for food and traditional Chinese medicine inspection and testing institutions at all levels, customs, food and traditional Chinese medicine processing enterprises, universities and research institutes.

III. Technical Parameters

1. Heating characteristics: far-infrared light-wave heating using natural quartz stone as the raw material, with infrared energy-concentrating vertical heating; heat is uniform and not lost; the sealed design is highly waterproof, resistant to high and low temperatures, effectively explosion-proof, safe against leakage and easy to clean.

2. Six-in-one integrated design of heating, distillation reflux, cooling, nitrogen blowing control, magnetic stirring and receiving.

3. Tap water cooling is possible; an optional external cooling water circulator (closed automatic cooling and circulation reflux device) can be fitted for energy and water savings.

4. Through the front 7-inch LCD touchscreen, functions such as pre-acid-addition heating of samples, distillation reflux, nitrogen blowing and magnetic stirring start-up control can be realized.

5. The instrument is equipped with magnetic stirring, with individually controllable speed; each magnetic stirrer has an independent switch and independent speed adjustment, and the stirring speed can be adjusted via the front LCD touchscreen.

6. Up to 4 samples can be processed at one time, and the heating power can be adjusted per position.

7. 4-channel nitrogen blowing units with independent rotameter control, flow range 0-2 L/min, with automatic pressure relief on overpressure.

8. Reflux condenser designed from the original drawings of the food national standard and the Chinese Pharmacopoeia.

9. Heating-up time: 5-8 min.

10. Single-furnace heating power: 600 W.

11. Single-furnace heating temperature: 0-650 °C (adjustable).