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[1] [2] This process is called inoculation. The tool consists of a thin handle with a loop about 5 mm wide or smaller at the end. It was originally made of twisted metal wire (such as platinum, tungsten or nichrome), but disposable molded plastic versions are now common. The size of the loop determines the volume of liquid an inoculation loop ...
The inoculation needle after incineration is cooled down on an uninoculated region of the agar plate culture. [1] Too much heat will kill off the inoculum during the direct contact of a flamed inoculation needle. [1] The inoculation needle is withdrawn from the agar culture after obtaining a small colony and the agar plate lid is then replaced.
Cell spreaders can be made from glass, plastic, or metal, and come in various shapes. A Drigalski spatula is a cell spreader consisting of a cylindrical rod or wire bent in the shape of a triangle with a handle. [1] [2] [3] Another variant is a rod bent in L-shape. [4] Extrusion molded versions can be T-shaped. [5]
Inoculation loop: used to inoculate test samples into culture media for bacterial or fungal cultures, antibiograms, etc. Sterilized by passing through a blue flame. Laminar flow cabinet: used to work aseptic Latex agglutination tiles: for serological analysis Lovibond comparator: a type of a colorimeter: McCartney's bottle or Flat medical bottle
However, during the initial heating, infectious material may be sprayed from the wire surface before it is killed, contaminating nearby surfaces and objects. Therefore, special heaters have been developed that surround the inoculating loop with a heated cage, ensuring that such sprayed material does not further contaminate the area.
For virus or phage cultures, a two-step inoculation is needed: bacteria that is grown acts like a host for the viral inoculum. The bacterial sample is diluted on the plate in a process called " streaking ": a sterile plastic stick, or a wire loop which is sterilized by heating; the loop is used to collect the first sample, and then to make a ...
In this technique, a drop of the culture on the end of a thin, sterile loop of wire, sometimes known as an inoculator, is streaked across the surface of the agar leaving organisms behind, a higher number at the beginning of the streak and a lower number at the end. At some point during a successful "streak", the number of organisms deposited ...
The phage can then be isolated from the resulting plaques in a lawn of bacteria on a plate. Viral cultures are obtained from their appropriate eukaryotic host cells. The streak plate method is a way to physically separate the microbial population, and is done by spreading the inoculate back and forth with an inoculating loop over the solid agar ...