Dark box type three purpose ultraviolet analyzerIt is a basic laboratory testing equipment, consisting of a UV light source system, a dark box observation area, and a sample stage. It can provide 254nm and 365nm dual wavelength UV and visible light modes. With the dark box shading design, it achieves precise observation without interference from stray light. It is a key tool in physical and chemical testing and biological experiments.

In molecular biology experiments, the dark box three purpose ultraviolet analyzer has become a "standard tool" for nucleic acid detection. After the DNA fragment amplified by PCR is separated by agarose gel electrophoresis, the embedded EB dye will fluoresce under the excitation of 254nm ultraviolet light. The experimenter can clearly identify the position, brightness and quantity of the band through the dark box observation area, and quickly judge the purity and size of the amplified product - this application directly determines the follow-up direction of gene cloning, mutation detection and other experiments. For example, in plasmid extraction validation, the dark box triple UV analyzer can visually distinguish between three plasmid configurations: supercoiled, linear, and open-loop, helping researchers screen plasmid samples with purity standards and avoid subsequent transfection experiment failures.

In the field of drug testing, the dark box type three purpose ultraviolet analyzer is the core equipment for drug authenticity identification and impurity screening. According to the requirements of the Chinese Pharmacopoeia, flavonoids and alkaloids in traditional Chinese medicine can be separated by thin layer chromatography (TLC) and observed for fluorescent spots under 365nm ultraviolet light. For example, berberine in Huanglian will show bright yellow fluorescence, and if additional spots appear, it indicates the presence of adulteration or impurities. For chemical drugs, such as vitamin B group and antibiotic drugs, a dark box three purpose UV analyzer can detect the UV absorption characteristics of their solutions, assisting in verifying whether the drug content meets the standards. Compared with traditional spectrophotometers, it is more suitable for rapid initial screening on site and widely used in intermediate product testing in drug production workshops and authenticity verification in pharmacies.

The safety inspection of the food industry cannot be separated from the support of the hidden box type three purpose ultraviolet analyzer. In the detection of food additives, prohibited ingredients such as fluorescent whitening agents can be separated by thin layer chromatography and exhibit characteristic fluorescence under ultraviolet light: for example, Sudan Red I shows red spots under 254nm ultraviolet light, and fluorescent whitening agents emit blue white fluorescence under 365nm ultraviolet light. The detection personnel can quickly identify whether there is illegal addition in food. In addition, in the quality identification of honey and edible oil, the dark box three use ultraviolet analyzer can determine whether there is adulteration by observing the fluorescence intensity and color of the sample - pure honey shows light blue fluorescence at 365nm, while honey mixed with fruit glucose syrup will significantly reduce fluorescence. This application provides an efficient and low-cost screening method for food quality inspection agencies.

In the field of criminal investigation and forensic medicine, the hidden box type three purpose ultraviolet analyzer plays the role of an "invisible evidence display device". The biological traces such as sweat, saliva, and bloodstains at the crime scene can be visualized under 365nm ultraviolet light from a dark box three purpose ultraviolet analyzer after being treated with fluorescent reagents; The seal ink and handwriting in forged documents will exhibit differential fluorescence reactions under different wavelengths of ultraviolet light, helping appraisers distinguish between authenticity. For example, in the case of bill forgery, the hidden box type three use ultraviolet analyzer can clearly identify the fluorescence difference between the altered handwriting and the original ink, providing key physical evidence for the investigation of the case.

In environmental monitoring,Dark box type three purpose ultraviolet analyzerUsed for detecting pollutants in water quality: Polycyclic aromatic hydrocarbons and phenolic compounds in water, after extraction and separation, exhibit characteristic fluorescence under ultraviolet light, allowing monitoring personnel to quickly determine the degree of water pollution; Heavy metal complexes in soil can also be screened through UV fluorescence characteristics, providing direction for subsequent precise detection.

From basic scientific research to industrial quality inspection, from food safety to criminal investigation and identification, the hidden box type three purpose ultraviolet analyzer has become a core tool for cross disciplinary experiments due to its easy operation and precise detection characteristics. Its hidden box design not only ensures the accuracy of detection results, but also avoids eye damage to experimental personnel caused by ultraviolet light, truly realizing the dual value of "precise detection+safe operation".