Bacterial testing apparatus and bacterial testing method

The bacterial testing apparatus addresses detection range limitations and pressure issues by using a cover with higher specific gravity to create a sealed space for bacteria, ensuring accurate and reproducible bacterial detection.

JP2026055218APending Publication Date: 2026-03-31SHIMADZU SEISAKUSHO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Conventional bacteria inspection apparatuses using CMOS oscillator sensors face challenges in reliably detecting bacteria outside the sensor's detection range due to depth limitations in bacterial suspensions, and the contact of containment members with sensors can cause pressure issues affecting detection values.

Method used

A bacterial testing apparatus with containers, sensors, and covers where the cover has a higher specific gravity than the culture medium, supporting the cover in a non-contact state with the sensor, and forming a sealed space to contain bacteria within the detection range, preventing pressure on the sensor and allowing accurate detection.

Benefits of technology

Enables accurate and stable detection of bacterial states by maintaining bacteria within the sensor's detection area, reducing pressure on the sensor, and minimizing convection, thereby improving measurement reproducibility and throughput.

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Abstract

Accurately detects the state of bacteria in a bacterial suspension. [Solution] The bacterial testing device 1 comprises one or more containers 2 for storing a bacterial solution 23 containing bacteria 7 and culture medium, a sensor 22 provided at the bottom 21 of each of the one or more containers 2 and having a detection area S for bacteria 7 above its upper surface, a cover 32 for sealing the bacteria 7, and a spacer 26 for supporting the cover 32 in a non-contact state with the upper surface of the sensor 22.
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