Microbial turbidimeter

Microbiological turbidimeter is an instrument for determining the concentration of microbial suspensions or bacterial suspensions. It determines the concentration by comparing the turbidity of the bacteria or microbial particles in the suspension by absorbing and scattering light. The turbidimeter usually contains a light source and a photocell, passes the suspension through an optical path, detects the absolute value of the absorbed and scattered light, and calculates the turbidity value based on its concentration. Microbiological turbidimeters are widely used in medicine, biology, food science, environmental protection and other fields as a tool for convenient, fast and accurate determination of microbial concentration.
Microbial turbidimeters can be divided into two categories based on their measurement methods:
1. Titration turbidimetric microbial turbidimeter: This type of microbial turbidimeter uses chemical reagents mixed with microbial samples, titrates to the reaction endpoint to achieve the maximum thermal reaction, and observes the turbidity of the reaction solution to measure the number of microbial cells in the microbial sample. This type of microbial turbidimeter includes density meter, direct turbidimetry, centrifugal turbidimetry, anionic surfactant turbidimetry, etc.

2. Optical turbidimetric microbial turbidimeter: This type of microbial turbidimeter is an instrument that measures the number of microbial cells by measuring the optical density of scattered light in microbial samples. This type of microbial turbidimeter includes the traditional Ted turbidimetric microbial turbidimeter, as well as the popular laser scattering microbial turbidimeter and photoelectric turbidimeter in recent years.