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A portable detector for coliforms and Escherichia coli

A technology for Escherichia coli and coliform bacteria, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of being unable to be quick and easy, and achieve the effects of expanding monitoring coverage, saving manpower, and high sensitivity

Active Publication Date: 2020-04-21
YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is still not fast and simple, and it is also a preliminary semi-quantitative judgment of the number of coliform colonies

Method used

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  • A portable detector for coliforms and Escherichia coli
  • A portable detector for coliforms and Escherichia coli
  • A portable detector for coliforms and Escherichia coli

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Embodiment Construction

[0026] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as Figure 1 ~ Figure 4 As shown, the portable detector for coliforms and Escherichia coli of the present invention mainly includes a housing 3 and a power module 23 inside it, a detection chamber 9 , a core detection module 13 and a main control circuit board 20 . The shell 3 mainly includes the hatch 1 on the top of the detector for inserting the test sample into the test chamber 9. The hatch 1 can be opened 120° above the side of the liquid crystal display 4 to the rear side of the detector. The charging interface 2 is located on the left side of the shell 3 , there is a liquid crystal display 4 on the upper side of the front of the shell 3, and an input button 5 on the lower side.

[0028] The main control circuit board 20 is located betw...

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Abstract

The invention discloses a portable detecting instrument aiming at coliform and escherichia coli. In-situ rapid measurement of the coliform and escherichia coli can be realized, the detection sensitivity can reach 2*10<-16>mol, the detection error is less than + / -5%, 20000 detection results and 1000 sampling plans can be stored, and 3000 sampling points can be realized in each sampling plan. Compared with the traditional watch glass culture method that the bacterial population measurement needs 24 hours, the portable detecting instrument disclosed by the invention only needs 10 seconds or less;and compared with the traditional bench device, the portable detecting instrument disclosed by the invention has a small size, has the weight of 380g only, has the advantages of economy, convenience,rapidness, time saving, high sensitivity and the like, brings great convenience to field monitoring, saves lots of manpower and material resources, can enlarge monitoring coverage area and is ideal detection equipment for performing health supervision on foods and tableware by basic level sanitary and epidemic prevention institutions.

Description

technical field [0001] The invention belongs to the technical field of biological detection, and in particular relates to a portable detector for coliforms and Escherichia coli. Background technique [0002] Microbiological testing is an important standard for judging whether food meets quality requirements and hygiene requirements. The testing indicators are divided into total number of bacteria testing, coliform testing and pathogenic bacteria testing. For a long time, coliform bacteria have been used as one of the commonly used indicator bacteria for food and water pollution at home and abroad to evaluate and judge the degree of food contamination by feces and the possibility of contamination by enteric pathogenic bacteria. [0003] The plate counting method (plate counting, plate colony number selection, and confirmation experiment) in GB 4789.3-2016 is mostly used for routine detection of coliforms. It takes a total of 3 days. The operation is cumbersome, time-consuming...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428
Inventor 王洪亮王振华范志浩杨贤伟马佳健李盛勇陈文浩丁英杰蔡佳玲郑国娟黄灿灿潘健沈国金蔡强
Owner YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG
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