Stereo microscope is an optical microscope that is used to observe large, three dimensional and opaque specimens at low magnification. It is also called dissecting microscope. It gives a magnified image of the surface of the object by using reflected light. It is different from compound microscope because compound microscope uses transmitted light through thin … Read more
Microscope is an instrument that is used in science laboratories to visualize very minute objects, such as cells and microorganisms. It gives a contrasting image that is magnified, so the structures can be observed. The term microscope is derived from Greek words “mikrós” meaning “small” and “skópéō” meaning “look at”. Microscopes are made up of … Read more
Electron microscope is a high power microscope that uses a beam of accelerated electrons instead of visible light for illumination and image formation. Due to very short wavelength of electrons, it can overcome the diffraction limit of light microscope lenses. Hence, it gives very high resolving power and very high magnification as compared to compound … Read more
Baran pipette column is a microscale variation of flash chromatography which is used for rapid purification of small reaction mixtures. It is mainly used when the amount of sample is low, generally 10 to 500 mg. This method was designed by Baran laboratory for making purification faster and more efficient. It is based on the … Read more
Gas chromatography is a chromatographic technique which is used for separation and analysis of volatile substances. It is mainly used for the compounds which can be vaporized without decomposition. In this technique, the sample is injected into a heated chamber. The sample is converted into vapour and carried by an inert gas through a column. … Read more
Mohr pipette (graduated pipette) is a type of graduated laboratory pipette used to measure and transfer variable volumes of liquid accurately. It is a glass (or sometimes plastic) straight tube with graduation marks along the length. It is different from volumetric pipette because it can deliver different volumes as per the required marking. It is … Read more
Pipette dropper is a simple laboratory device used to measure and transfer small volume of liquid in the form of drops. It is also called as Pasteur pipette or eye dropper. It is used when controlled amount of liquid is required, without using a graduated pipette. It is made up of a narrow glass or … Read more
Repeater pipette is a special type of pipette used to dispense the same volume of liquid many times after a single aspiration. It is also called stepper pipette or multi dispenser pipette. It is used when repetitive dispensing is required in routine laboratory works. It works on positive displacement mechanism in which a piston inside … Read more
Mouth pipette is a laboratory method of pipetting in which the suction is created by mouth to draw liquid into a glass pipette tube like drinking with a straw. It was used for taking and transferring small amount of liquids from one container to another container. The volume taken is controlled by the user by … Read more
Multichannel pipette is a laboratory pipette used to measure and transfer multiple liquid volumes at the same time. It has more than one channel arranged in a straight row and each channel holds its own disposable tip. It is used when same volume is needed to be delivered into many tubes or wells in one … Read more
