MicrobeWorld App

appsquarebannerad200x200

ASM Fellowships

Fellowship

Microbes After Hours

Watter-Supply-200x200-Banner

Click for more "Microbes After Hours" videos

Join MicrobeWorld

Subscribe via Email

subscribe

Featured Image

Featured Video

Ebola Virus explained

Supporters

ASM House 200X200

Pipetts and Swabs

pipetteThese are the tools microbiologists use to transfer microbial cells from one place to another. Pipettes combine the workings of a straw and a syringe in one instrument. Scientists use them to draw up liquids from one vial,

flask, or other container and squirt them in measured amounts into another flask, test tube, or other vessel.

Microbiologists use inoculating loops or swabs principally to inoculate petri plates with microbial cells. Loops are thin pieces of metal shaped into a small loop at one end.

To inoculate a plate, a microbiologist would first sterilize the tip of the swab or loop. Then he would dip or rub the loop over a contaminated surface or in a prepared sample. He then brushes the tip of the swab or loop across the nutrient agar in a plate in a series of zig-zag patterns. The zig-zagging causes microbial cells to be laid down in smaller clusters, allowing distinct and separate colonies to grow.

 

 

Collections (0)

American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use