- Centrifuge tubes or centrifuge tips are straight tubes of various sizes made of glass or plastic. They may vary in capacity from tens of milliliters capacities to microcentrifuges used extensively in molecular biology laboratories. The commonly used tubes ones are of about 10 cm long. Microcentrifuges typically accommodate microcentrifuge tubes with capacities from 250 μl to 2.0 ml. These are exclusively made of plastic.
Centrifugation is often used to isolate organelles, nucleic acids (DNA) and purify enveloped viruses.
Laboratory centrifuges:
Microcentrifuges
Clinical centrifuges used for blood collection tubes, low-speed devices)
Multipurpose bench top centrifuges
Stand alone centrifuges for heavy devices
2. Cuvettes:
A cuvette is a small tube of circular or square cross section, sealed at one end, made of plastic, glass, or fused quartz (for UV light) and designed to record samples for spectroscopic experiments. When accuracy is not much important than speed, disposable plastic cuvettes are often used in fast spectroscopic assays for speed.
Some cuvettes will be clear only on opposite sides, so that they pass a single beam of light through that pair of sides. For easy handling, the sides are opaque and rough. In fluorescence spectroscopy, they must be clear on all four sides because fluorescence is measured at a right-angle to the beam path.
Some cuvettes, known as tandem cuvettes, have a glass barrier that extends 2/3 up inside, so that measurements can be taken with two solutions separated, and again when they are mixed. Typically, cuvettes are 10 mm (0.39 in) across, to allow for easy calculations of coefficients of absorption.
Cuvettes to be used in should never be mechanically stressed, as the stress will cause a ray of light passing through a crystal to be broken into two unequal waves towards different directions in the quartz and affect the measurements made.
3. Microtitre plate:
A microtitre plate or microplate or microwell plate is a flat plate with multiple "wells" (circular or square) used as small test tubes specifically in critical analytical research and clinical diagnostic testing laboratories. Eg. HIV test
A microplate typically has 6 to 9600 wells, and an "array tape" product has been developed that provides a continuous strip of microplates held on a flexible plastic tape. A well can hold tens of nanolitres to millilitres of liquid. They can also be used to store dry powder or as racks. Microplates can be stored at low temperatures for long periods, may be heated to increase the rate of solvent evaporation.
Ref: Google Books/ free encyclopedia/ Wikipedia
The laboratory consumables manufactured by Abdos Labware are made from very precise tools ensuring consistency and repeatability in performance. These laboratory products are made in clean room and they are free from RNase, DNase and Pryogen and are also very clean to ensure contamination free results.
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