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The pour plate technique is the typical technique used to prepare plate count agars. Here, the inoculum is added to the molten agar before pouring the plate. The molten agar is cooled to about 45 degrees Celsius and is poured using a sterile method into a petri dish containing a specific diluted sample.
Agar plates may also be indicator plates, in which the organisms are not selected based on growth, but are instead distinguished by a color change in some colonies, typically caused by the action of an enzyme on some compound added to the medium. [6] The plates are incubated for 12 hours up to several days, depending on the test that is performed.
Fractionation at total reflux. The Fenske equation in continuous fractional distillation is an equation used for calculating the minimum number of theoretical plates required for the separation of a binary feed stream by a fractionation column that is being operated at total reflux (i.e., which means that no overhead product distillate is being withdrawn from the column).
Cup plate made of pressed glass. Cup plates are coasters that provide a place to rest a tea cup while leaving space for a light snack. Teacup plates originated in England in the early 1800s and went out of fashion in the second half of the 19th century [1] (Barber puts the peak of popularity in the US at 1840s [2]), with a brief reappearance in the first third of the 20th century as bridge ...