Various models of food sulfur dioxide residue detectors

With the promulgation of the new national standard GB5009.34-2022 "Determination of Sulfur Dioxide in Food," the methods for determining sulfur dioxide in food and sulfur dioxide in traditional Chinese medicines as per the Chinese Pharmacopoeia have become largely similar. Based on strict adherence to the national standard requirements, the instrument integrates functions such as heating, distillation, nitrogen blowing, timing, and titration into one unit. It can simultaneously process 3-5 samples (blank samples, parallel samples), thereby greatly improving the accuracy of detection data and reducing working time. Additionally, this machine is fully compatible with the pre-treatment for sulfur dioxide determination in traditional Chinese medicines as specified in the Chinese Pharmacopoeia, enabling dual-purpose use with one machine.

Product Introduction

The food sulfur dioxide distillation apparatus adopts an intelligent integrated design, utilizing far-infrared ceramic heating devices to replace high-power electric heaters. It also employs intelligent distillation endpoint control, built-in cooling water automatic temperature reduction and reflux devices, and professionally designed condensers, among other technical means. This achieves simplicity of operation, automatic distillation, aesthetic practicality, and energy savings. It is widely applicable for distillation operations such as sulfur dioxide residue in food testing, as well as formaldehyde and alcohol content determinations.

Application Scope

Widely applicable in various chemical laboratories requiring distillation processes, including environmental monitoring, environmental protection, disease control, aquaculture, water supply and drainage, universities, research institutions, and industrial enterprises. Examples include distillation and digestion processes for volatile phenols, cyanide, ammonia nitrogen, Kjeldahl nitrogen, COD, moisture in oil, and distillation experiments for sulfur dioxide residue in food.

Main Features

1. Integrated design for easy installation and maintenance; capable of processing 6 sets of samples at once, with independent temperature control for each hole; heating power adjustable per hole.

2. Control module uses PLC for robust and stable performance, with a 7-inch LCD touch screen.

3. Optional external cooling water circulation device, enclosed cooling water automatic temperature reduction, and circulation reflux device for energy savings.

4. Utilizes far-infrared ceramic heating devices for high heating efficiency, energy savings, excellent waterproofing, and resistance to acid and alkali corrosion.

5. Heating power adjustable from 0-500W per channel, with independent control for each heating device and built-in gentle boiling mode.

6. Heating countdown function, with adjustable time per channel, automatically stops heating when time is up.

7. Independent rotor flow meters control nitrogen flow rate, adjustable per hole (20-2000 ml/min).

8. Receiving flask bottom equipped with magnetic stirrer, stir speed adjustable per group with stepless speed control.

9. Comes with butterfly clamps and titration stand for direct titration after experiment completion.

Specifications

Model: EJ-SJC-100R

Display: 7-inch touch screen

Heating Method: Far-infrared ceramic heating bowl (flameless heating, waterproof)

Cooling Method: External chiller

Nitrogen Protection Function: Yes, main unit has a nitrogen main interface, nitrogen flow controllable per hole

Temperature Control: 0-500W independent heating power adjustment per hole

Number of Distillation Units: 6 sets

Distillation Flask Specification: 1000ml × 6 double-neck flasks

Distillate Receiving Flask: 250ml × 6 conical flasks

Rated Power: 3200W

Rated Voltage: 220V/50Hz

Dimensions (mm): 1200*486*730

Leakage Protection Device: Yes