As a technical institution responsible for ensuring food and drug safety, the Institute of Food and Drug Inspection Science undertakes important responsibilities such as food quality sampling, safety risk monitoring, and research on inspection methods. The strength of its testing capabilities directly affects the accuracy and effectiveness of food safety supervision. Accurate and efficient detection work relies on comprehensive and professional food safety testing instruments as support. Based on daily inspection and testing needs, the procurement list of food safety testing instruments in the hospital covers the entire chain of equipment from sample pretreatment to various risk indicator detection. Among them, food additive detectors, food safety detectors, food heavy metal detectors, food pretreatment equipment, ATP fluorescence detectors, etc. have become the core procurement categories, building a multi-level food safety testing technology system.

1、 Sample pre-treatment equipment: a precise "pre guarantee" for detection

In the food safety testing process, sample pretreatment is a key step, which aims to separate and purify the target analyte in the sample, remove interfering components, and improve the accuracy and reliability of the testing results. Therefore, food pre-processing equipment is the basic core equipment in the procurement list of the Institute of Food and Drug Inspection Science, covering various specialized instruments and adapting to the processing needs of different types of samples.

Common pre-treatment equipment in the procurement list includes high-speed freeze centrifuges, ultrasonic extractors, solid-phase extractors, microwave digesters, rotary evaporators, etc. High speed cryogenic centrifuge can separate solid-liquid components in samples by high-speed rotation, playing an important role in the separation of target substances such as oil and protein samples. Its low-temperature operating characteristics can also avoid the decomposition of thermosensitive target substances; Ultrasonic extractor utilizes the cavitation effect of ultrasound to quickly and efficiently extract target detection substances from samples into solvents. It is widely used for the extraction of pesticide residues, additives and other components in food. Compared with traditional extraction methods, it significantly shortens the extraction time and improves the extraction efficiency; The solid-phase extraction instrument selectively adsorbs and elutes the target substance in the sample through an adsorbent, achieving purification and enrichment of the target substance, effectively reducing the interference of the sample matrix, and ensuring the accuracy of subsequent detection; Microwave digestion analyzer is mainly used for sample pretreatment in food heavy metal detection. By microwave heating, the sample is rapidly digested in a high-pressure environment, destroying the sample matrix and allowing heavy metal ions to fully dissolve, providing a pure sample solution for subsequent heavy metal detection; The rotary evaporator is used for concentration of sample solutions, rapidly removing solvents through vacuum distillation, increasing the concentration of target substances, and adapting to various trace analysis scenarios.

2、 Core Risk Indicator Testing Instrument: Accurately Identify Safety Hazards

In response to various common safety risk indicators in food, the procurement list of the Institute of Food and Drug Inspection Science includes a variety of specialized testing instruments that can accurately detect various hidden dangers such as food additives, heavy metals, and microbial contamination. Among them, food additive detectors, food heavy metal detectors, ATP fluorescence detectors, etc. are high-frequency procurement categories.

（1） Food additive detector: a "ruler" for standardizing the use of additives

Food additives have the functions of improving flavor and extending shelf life in food production, but excessive use can harm human health. Food additive detector is a specialized equipment for quantitative or qualitative testing of various additives in food, and is an important component of the procurement list. The food additive detector can accurately detect various additive indicators in food, such as preservatives (such as malic acid and benzoic acid), sweeteners (such as saccharin and acesulfame), pigments (such as lemon yellow and sunset yellow), bleaching agents (such as sulfur dioxide), etc. It has the characteristics of high detection accuracy, fast response speed, and convenient operation, which can quickly screen out food additives that exceed the standard, provide technical support for regulating the use of additives in food production enterprises, and ensure the compliance and safety of food.

（2） Food heavy metal detector: a "barrier" to intercept heavy metal pollution

Heavy metal pollution is a prominent hazard in the field of food safety. Heavy metals such as lead, cadmium, mercury, and arsenic can easily enter the human body through food, and long-term accumulation can damage organs such as the liver and kidneys, posing a threat to public health. The food heavy metal detector, as the core equipment for detecting heavy metal content in food, is a purchased instrument of the Food and Drug Inspection Science Research Institute. The heavy metal detectors in the procurement list cover various types, such as atomic absorption spectrophotometers, atomic fluorescence spectrophotometers, inductively coupled plasma mass spectrometers, etc.

（3） ATP fluorescence detector: a powerful tool for rapid screening of microbial contamination

Microbial contamination is one of the main causes of food spoilage and food poisoning. Rapid screening of microbial contamination in food is crucial for ensuring food safety. The ATP fluorescence detector, with its fast and convenient detection advantages, has become an important supplementary equipment in the procurement list of the Food and Drug Inspection Science Research Institute. This instrument is based on the principle of bioluminescence, and can quickly determine the degree of microbial contamination in a sample by detecting the ATP (adenosine triphosphate) content produced by microbial metabolism in food. Its detection process does not require complex sample pretreatment, and the detection time only takes a few minutes, which can achieve "immediate detection and results". It is suitable for hygiene monitoring in food production and processing, rapid sampling in circulation, and other scenarios. Through the rapid screening of ATP fluorescence detector, potential microbial contamination hazards in food can be detected in a timely manner, buying time for subsequent precise detection and disposal work, and improving the timeliness of food safety supervision.

（4） Multi functional food safety detector: a comprehensive expert with full scene coverage

In addition to various specialized testing instruments, multifunctional food safety detectors are also a key category on the procurement list. This instrument integrates multiple detection modules and can achieve comprehensive detection of various risk indicators such as pesticide residues, veterinary drug residues, food additives, heavy metals, microorganisms, etc. in food, with the advantage of "one machine for multiple uses". Its detection principle covers various technologies such as enzyme inhibition, immunochromatography, spectrophotometry, etc., and is suitable for the detection of various food samples such as vegetables, fruits, meat, aquatic products, grains and oils. The multifunctional food safety detector is easy to operate and does not require professional testing skills to get started. It has high testing efficiency and can meet the needs of large-scale and multi batch food sampling. It provides efficient technical support for the Food and Drug Inspection Science Research Institute to carry out daily sampling and special rectification work, effectively improving the coverage and efficiency of testing work.

3、 Other auxiliary detection instruments: an important supplement to improving the detection system

In addition to the core equipment mentioned above, the procurement list of the Food and Drug Inspection Science Research Institute also includes various auxiliary testing instruments to further improve the testing system. For example, electronic scales are used for sample weighing and reagent preparation, and their accuracy directly affects the accuracy of detection results; Ultra pure water machine provides high-purity experimental water for testing work, ensuring the reliability of the experimental process; A constant temperature and humidity chamber is used for storing and cultivating samples, providing stable environmental conditions for experiments such as microbial detection and chemical analysis; UV visible spectrophotometer is widely used for quantitative analysis of various components in food and is a fundamental instrument in chemical detection. These auxiliary instruments and core testing equipment work together to form a complete and efficient food safety testing system, ensuring the smooth progress of testing work and the accuracy and reliability of testing results.

Conclusion

The procurement list of food safety testing instruments by the Institute of Food and Drug Inspection Science focuses on the core requirements of "full chain testing and full risk coverage", covering equipment for multiple links such as sample pretreatment, core risk indicator testing, and auxiliary testing. From pre-processing equipment that ensures precise sample processing, to food additive detectors and heavy metal detectors that accurately identify various hidden dangers, to ATP fluorescence detectors that quickly screen for microbial contamination, and multifunctional food safety detectors that achieve comprehensive detection of multiple indicators, each type of instrument plays an irreplaceable role in food safety testing. The procurement and application of these professional instruments not only enhance the testing capabilities and work efficiency of the Food and Drug Inspection Science Research Institute, but also strengthen the technical defense line of food safety supervision, providing a solid technological guarantee for safeguarding the public's "safety on the tip of the tongue".