Spray Chamber Apparatus for Uniform Agar Plate Inoculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual inoculation of agar plates using streaking or spreading techniques is time-consuming, prone to uneven spreading, and can damage the agar surface, leading to failed experiments and inefficiencies in microbial distribution.
Innovation Solution
A spray chamber apparatus with an atomizer system that atomizes the microbial suspension for uniform inoculation of agar plates, preventing cross-contamination and surface damage, allowing for quick and efficient inoculation of multiple plates without external contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual spreading or streaking technique is used, then inoculation can be performed with simple equipment, but the process is time-consuming and requires a lot of attention and care
Solution Approach 1:
The patent replaces manual mechanical spreading/streaking operations with an automated spray system that uses compressed gas to atomize and distribute microbial inoculum across the agar surface, eliminating the need for manual manipulation while significantly increasing inoculation speed
Solution Approach 2:
The spray system is designed to be self-regulating, where the atomized spray pattern and distribution are automatically controlled by the compressed gas flow and chamber geometry, reducing the need for operator attention and care during the inoculation process
2Manufacturing precision
If manual streaking or spreading is used, then equipment is simple, but uneven spreading and discontinuous streaking occur leading to failed experiments
Solution Approach 1:
The patent replaces manual mechanical spreading/streaking operations with an automated spray system that uses compressed gas to atomize and distribute microbial inoculum across the agar surface, eliminating the need for manual manipulation while significantly increasing inoculation speed
Solution Approach 2:
The patent changes the physical state of the inoculum delivery from liquid/drop form to atomized spray form, creating a fine mist of droplets that distribute more uniformly across the agar surface compared to manual spreading techniques
3Object-affected harmful factors
If wire loop, glass spreader, or cotton swab is used, then inoculation can be performed, but the surface of the solidified agar media is damaged
Solution Approach 1:
The patent replaces contact-based mechanical tools (wire loops, spreaders, swabs) with a non-contact spray system that delivers atomized inoculum through compressed gas, eliminating physical contact with the agar surface and preventing damage
Solution Approach 2:
The patent introduces compressed gas as an intermediary medium to transport and deposit the microbial inoculum onto the agar surface without requiring direct contact between the inoculum source and the agar, thereby preventing surface damage
4Area of stationary object
If L-shaped spreader is used, then inoculation can be performed, but culture does not reach the inner peripheral areas of the agar plate
Solution Approach 1:
The patent segments the inoculum delivery into atomized droplets that can be dispersed throughout the chamber and reach all areas of the agar plate including inner peripheries, eliminating the need for manual manipulation to reach difficult areas
Solution Approach 2:
The patent changes the physical state of the inoculum delivery from liquid/drop form to atomized spray form, creating a fine mist of droplets that distribute more uniformly across the agar surface including peripheral areas
5Manufacturing precision
If microbial inoculum is applied manually, then inoculation can be performed, but condensed colonies form in the center of the plate which cannot be distinguished properly
Solution Approach 1:
The patent changes the physical state of the inoculum delivery from liquid/drop form to atomized spray form, creating a fine mist of droplets that distribute more uniformly across the agar surface including peripheral areas
Solution Approach 2:
The patent replaces manual mechanical spreading/streaking operations with an automated spray system that uses compressed gas to atomize and distribute microbial inoculum across the agar surface, eliminating the need for manual manipulation while significantly increasing inoculation speed
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus ensures uniform microbial distribution across the agar surface, reducing experiment time and preventing contamination, while maintaining the integrity of the agar surface, achieving comparable results to manual methods in antimicrobial susceptibility tests.
Implementation Method 1
an atomized microbial suspension may be sprayed through the upper opening of the spray chamber and onto the agar
Implementation Method 2
A containment feature extends around an inner surface of the spray chamber to catch any drops that may form on its inner wall and advance down towards the lower opening
Data Source
AI summary
The apparatus for inoculating agar plates includes a spray chamber having an upper opening for receiving an atomized microbial suspension and a lower opening for receiving an agar plate. The apparatus also includes an atomizer including a reservoir and a fluid tube for delivering the microbial suspension to the atomizer nozzle. A containment feature extends around an inner surface of the spray chamber to catch any drop that may form on its inner wall and advance down towards the lower opening. The spray chamber allows multiple agar plates to be quickly inoculated without cross-contamination of agar habitats, without contaminating the outside of the plates, and without contaminating the work area.