Agar is the most commonly used gelling agent for preparing semisolid and solid plant tissue culture media. The agar concentrations commonly used in plant cell culture media fall in range between 0.5 and 1.0%; these concentrations give a firm gel at the typical pH of plant cell culture media. Another gelling agent commonly used for commercial as well as research purposes is Gellan gum. This product is synthetic and should be used at 1.5-2.5 g/litre, resulting in a clear gel which aids in detecting contamination.
Every morning the microbiology lab receives fresh agar plates from the incubator. Each plate carries dozens of tiny bacterial colonies....
Read More
A water quality laboratory receives samples taken from different points of a distribution network. The testing team shall determine whether...
Read More
A laboratory receives an urgent request after a routine water quality inspection. Drinking water samples come into a municipal water...
Read More
A food manufacturer sends two batches of packaged juice to the laboratory. Both batches look the same. They have the...
Read More
A microbiologist finishes inoculating a culture plate and places it inside the incubator. The next day, the plate is covered...
Read More
Every microbiologist has seen this happen. A clinical specimen from a patient with suspected bacterial meningitis is received. The sample...
Read More
How can I help you today?
