A hot wire device for cutting tissue culture flasks

Area of Science:

• Materials Science
• Laboratory Equipment Design
• Microscopy Sample Preparation

Background:

• Traditional methods for sectioning plastic culture ware often generate microplastic particles.
• These microplastic particles can contaminate samples, interfering with downstream analyses.
• A need exists for a cleaner, safer method to modify culture vessels.

Purpose of the Study:

• To describe the construction and use of a novel hot wire cutting device.
• To demonstrate a method for cleanly separating the bottom of plastic culture flasks.
• To provide an alternative to existing cutting techniques that produce polystyrene debris.

Main Methods:

• Constructed a hot wire device using steel rod, brass screws, nichrome wire, and acrylic components.
• Utilized a variable power transformer to heat the nichrome wire.
• Performed four sequential cuts on the culture flask base to detach it.

Main Results:

• The device successfully separated the culture flask bottom from the main body.
• The cutting process avoided the generation of polystyrene fragments.
• Prepared samples were suitable for staining, air-drying, and cover slip mounting using PVP or epoxy resin.

Conclusions:

• The hot wire device offers a safe and effective method for modifying plastic culture ware.
• This technique minimizes sample contamination by eliminating microplastic generation.
• The method is suitable for preparing samples for various microscopic examination techniques.