What is lab spreader?

A lab spreader is a laboratory tool used to evenly distribute liquid samples, such as microbial cultures or cell suspensions, across a surface, typically a Petri dish. It often features a flat, sterile blade or rod that allows for uniform spreading without introducing air bubbles. This technique is essential for creating even lawns of bacteria or cells for various experiments, such as antibiotic susceptibility testing or colony counting. Lab spreaders can be made of materials like glass or metal and are often sterilized before use to prevent contamination.