Daily maintenance and calibration tips for automatic colony counter

　　Automatic colony counterIt is a key equipment for microbial detection, and its stability and accuracy directly affect the experimental results. Proper daily maintenance and standardized calibration are the foundation for ensuring the long-term reliable operation of instruments.

1、 Daily maintenance requires attention to detail cleaning and standardized operation.

After each use, any remaining culture medium, water stains, or impurities in the culture dish should be promptly cleaned to avoid dirt accumulation on the counting platform or light source area. You can use a soft dust-free cloth dipped in mild detergent to gently wipe it offAutomatic colony counterSurface and workbench, stubborn stains should be avoided from scratching key components.

When not in use for a long time, residual samples inside should be removed, the power should be turned off, and a dust cover should be covered to prevent dust from entering the optical system or sensor. In addition, it is necessary to standardize the placement of culture dishes in daily operations to ensure uniform and non overlapping distribution of bacterial colonies, and to avoid increasing the burden of instrument identification due to improper human operation.

2、 Regular calibration is the core step in maintaining accuracy.

Calibration should focus on the accuracy of the counting function and imaging system. Counting calibration can be tested by using a standard colony template (a known number of standard bacterial spots), comparing the automatic counting results of the instrument with the manually reviewed values. If the deviation exceeds the acceptable range, the light source intensity, image recognition algorithm parameters, or clean the counting lens need to be checked.

The imaging system calibration criteria require observing the clarity and color reproduction of the culture dish image - if the colony edge is blurry and the background reflection is abnormal, it may be necessary to adjust the brightness of the light source or clean the optical lens; If there is color cast or shadow, check the aging condition of the light source and replace it in a timely manner. It is recommended to perform basic calibration at least once a month, or perform full process calibration immediately after replacing core components.

Through standardized daily maintenance and periodic calibration, the service life of automatic colony counter can be effectively extended, ensuring the reliability of counting results and providing stable technical support for microbial detection.