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With the improvement of people's living standard, food safety has become the focus of attention. According to statistics, there are an additional 1.5 billion cases of diarrhoea and more than 3 million deaths of children globally each year, 70 per cent of which are caused by food and water contaminated by various pathogenic microorganisms. Therefore, food inspection is becoming increasingly important, and microbial inspection is an important content of food inspection. Rapid and accurate detection of food pathogens known as the "number one killer" is to ensure food safety of the first task. 

With the increasing improvement of our living standards, the detection technology of food safety is also changing with each passing day. To ensure good food safety, inspection and testing is a crucial link.

At present, with the rapid development of spectrum industry, optical fiber spectrometer is more and more recognized in China, its product performance and quality compared with foreign products almost the same.

Module spectrometer has been widely used in agriculture, biology, chemistry, geology, food safety, chromaticity calculation, environmental detection, medicine and health, LED detection, semiconductor industry, petrochemical industry and other fields because of its high detection accuracy and fast speed.

Module spectrometer is small in size, simple in operation, non-professional inspectors can quickly master the operation method, the measurement time is short, only a few seconds to complete the sample detection, and there is no need for complex pre-treatment, so it can be widely used in food safety on-site detection.

The surface feature spectrometer is a photoelectric instrument to measure the surface vegetation, crops, soil, rock, water and other surface features. Generally, it has four channels, but more channels can also be assembled.

The spectrometer is composed of optical system, electronic circuit system, liquid crystal display and intelligent microcomputer.

The main machine is equipped with interface board and can be connected to other micro printers or on-line with IBMPCXT.

The ground-object spectrometer is small and light. It can be mounted on a tripod for field work or carried out by hand.

The physical content of measurement includes brightness, illuminance reflectance, spectral reflectance, spectral distribution and so on.

Most of the newly designed ground-object spectrometers are double spectrometers, that is, they measure the spectrum of solar radiation at the same time as the ground-object spectrometers, so that the errors caused by solar radiation during the measurement can be automatically eliminated.

As an important instrument for collecting spectral data and extracting spectral feature information of ground objects, ground object spectrometer integrates data measurement, collection, storage and operation into one.

Infrared spectroscopy is an important method to analyze the structure of compounds. The conventional transmission method USES press sheet or coating film for measurement, and it is difficult to test some special samples (such as insoluble, insoluble, incomable, etc. Attenuated Total reflection Infrared spectrometer (ATR) was designed to overcome these shortcomings.