LABORATORY GLASSWARE

LABORATORY GLASSWARES

• Petri dish
• Conical flask
• Beakers
• Test tube
• Pipette
• Graduated cylinders
• Funnels
• Glass slides or Microscope slides
• Centrifuge tubes
•  Inoculating loop

Petri dish:

• Is a shallow transparent lidded dish.
• It is also known as petri plate or cell culture dish.
• Petri dish or petri plate was discovered by Sir Julius Richard Petri.
• It is used to culture cells of different microorganisms such as bacteria, fungi and small mosses.
• Diameters ranging from 30-200 mm.
• It is usually made up of borosilicate glass.

Uses:

• In microbiology for culture of microorganisms.

• In cell culture for cultivation of isolated cells.
• In sample storage and display.

Conical flask:

• It is a type of flask which have a conical body with flat bottom and a cylindrical neck.
• It is also known as Erlenmeyer flask or a titration flask.
• It is named after scientist Emil Erlenmeyer.

Uses:

• In microbiology, it is used for the preparation of microbial culture.
• In chemistry, it is commonly used for mixing by swirling during titration and other solvents.

Beaker:

• It is a laboratory equipment or glassware.

• It is generally container with flat bottom and cylindrical in shape and also have small beak to aid pouring.
• They are made up of glass [Borosilicate glass] or certain plates.

It is of three types:

• A low from or Griffin from beaker.
• A tall from or Berzelius beaker.
• A flat beaker or Crystallizer.

It is commonly used for diluting concentrated chemicals make buffers or catch products during an experiment.

Test tube:

•  It is a finger –like length made up glass or plastic, which is closed at the bottom and open at the top.

• It is also referred as Culture tube or Sample tube.
• It is generally made up of Borosilicate glass.

Uses:

• In Bioscience for handling and culturing of different organisms.
• In chemistry commonly used for handling of chemicals.

Pipette:

• It is a laboratory tool, sometimes also termed as pipet

• It is commonly used in biology, medicine and chemistry labs for transfer of measured volume of liquid.

• Pipettes ranges from 1-1000 µL are distinguished as Micropipettes and Macro pipettes.
• Heinrich Schnitger was first to patent micropipette in 1957.

Graduated Cylinder:

• – It is commonly laboratory glassware which is used to measure the volume of liquid.

• It has a narrow and cylindrical in shape.
• Graduated cylinder also known as mixing or measuring cylinder.
• Graduated cylinder are made up of Polypropylene.

Funnels:

• It is a tube that is narrow at the bottom and wide at the top.

• It is commonly made up of stainless steel, aluminum, glass, or plastic.

Uses:

• used for pouring liquids or powder.
• used for holding filter paper in filtration.
• used in transferring liquid in small container.

Glass slides or Microscope slides:

• It is flat piece of glass.

• It is commonly used for the examination under microscope.
• A standard microscope slides ranges from 75mm by 25mm and 1mm thick.

Centrifuge tubes:

• It is generally plastic or glass tube which is used for containing liquid during centrifugation.

• It is usually made up of Polypropylene.

Inoculating loop:

• It is simple laboratory tool used by microbiologists.

• It is also known as smear loop or, micro-streaker.
• It is generally made up of metal wire [such as Nicrome, platinum or tungsten].
• Inoculating loop used for transferring a small sample or inoculum from a culture of microorganisms.
• It is also used in streaking on a culture plates.