Client
Private Client
Year
2015
Duration
5 months
Tags
Process Automation, Mechanism Design
This project involved the design and prototyping of an automated Gram staining device for microbiology laboratories. The traditional staining process is performed manually, requiring precise timing and multiple chemical steps, making it both error-prone and difficult to scale.
The goal was to create a system capable of processing multiple slides in a controlled and repeatable way while reducing chemical consumption and operator dependency.
The system was built around a rotating carousel capable of holding multiple slides, combined with a fluid delivery system using pumps and atomizing nozzles to apply staining reagents in a controlled manner.
Different pump types and nozzle configurations were tested to achieve reliable and uniform coverage while minimizing cross-contamination risk. The device also integrates process sequencing, timing control, and a user interface for flexible operation. Additional concepts such as automated fixation, drying via high-speed rotation, and optional computer vision-based result classification were explored to extend the system beyond basic staining into a more complete laboratory solution.
Problem
Manual Gram staining requires precise timing and handling, making it highly dependent on operator skill. This leads to inconsistent results, low throughput, and inefficient use of chemicals in busy laboratories.
Need
A system was needed to standardize the staining process while handling multiple samples in parallel. It also had to reduce human error and improve efficiency without significantly increasing complexity or cost.
Solution
An automated device was developed using a rotating slide carousel and controlled fluid delivery system. By managing timing, flow, and sequencing, the process became repeatable, scalable, and less dependent on manual intervention.