Storage containers And Pipettes

Storage containers

Winchester bottles

• Used for the storage of corrosive chemicals and for the disposal of some types of chemical waste

Winchester Bottle

Petri dish

• A shallow glass or plastic cylindrical dish that biologists use to culture cells, which can be bacteria, animal, plant, or fungus.

Petri Dish

Vial

• A glass vessel or bottle, especially a small bottle used to store chemical compounds

Vials

Pipette

• A laboratory instrument used to transport a measured volume of liquid.

Micropipette

3 types:

• Manual
• Straight & Graduated

• Bulb

Bulb

Pasteur pipettes is used to transfer small quantities of liquids.

Pasteur pipettes

Laboratory Glasswares

Laboratory Glasswares

Laboratory glassware refers to a variety of equipment, traditionally made of glass, used for scientific experiment and other work in science, especially in chemistry & biology laboratories. Some of the equipment is now made of plastic for cost, ruggedness, and convenience reasons, but glass is still used for some applications because it is relatively inert, transparent, more heat-resistant than some plastic up to a point, and relatively easy to customize.

Types of Glass:

Soda-lime glass

• The most prevalent type of glass. It can be processed so inexpensively that it is used for windowpanes and bottles.

• The glass transition temperature (Tg) is about 730°C and the melting point is about 1000°C.Water containing powders of soda-lime glass exhibits alkalinity because Na+ and Ca2+ dissolve in it, leading to hydrolysis.

Borosilicate glass

• Borosilicate glass is a type of heat-resistant glass
• E.g. Pyrex
• Borosilicate glass is created by adding boron to the traditional glassmaker's "frit" of silicate sand, soda, and ground lime
• Has a very low thermal expansion coefficient
• Less dense than ordinary glass
• More resistant to thermal shock than other types of glass
• can still crack or shatter when subject to rapid or uneven temperature variations

Reaction Vessels & Containers

Reaction vessels & containers – e.g.; Beakers, Flasks

Beakers

* Simple container for liquids
* Generally cylindrical in shape, with a flat bottom
* Beakers are available in a wide range of sizes, from 1mL up to several liters
* They may be made of glass (very often Pyrex) or of plastic.
* Often graduated, marked on the side with lines indicating the volume contained
* For instance, a 250 mL beaker might be marked with lines to indicate 50, 100, 150, 200, and 250 mL of volume. The accuracy of these marks can vary from one beaker to another.

Used

* Used for holding solutions of corrosive chemicals, such as acids.

Flasks

* Come in a number of shapes and a wide range of sizes, but a common distinguishing aspect in their shapes
* Flask sizes are specified by the volume they can hold, typically in metric units such as milliliters (mL or ml) or liters (L or l).

Used:

* For making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals, samples, solutions, etc. for chemical reactions or other processes such as mixing, heating, cooling, dissolving, precipitation, boiling (as in distillation), or analysis.

Tubes

Tubes – e.g.; test tubes, boiling tubes, drying tubes

Test tubes are available in a multitude of lengths and widths to serve a varying number of needs.

Test Tubes

Used:

Designed to allow easy heating of these samples, aid pouring of a liquid from the test tube to a beaker and for running small scale experiments, typically tests

Boiling tubes - larger test tubes used for boiling of small quantities of reaction mixtures. A boiling tube looks like a test tube. Used to strongly heat substances in the flame of a Bunsen burner commonly made from Pyrex glass which can withstand high temperatures

Drying Tubes

Drying tubes, acid trap tubes, scrubbing trap tubes and containers. A variety of empty glass drying tubes. Drying tubes are often used in less-demanding applications, typically in organic syntheses

Laboratory Plasticwares

Beaker

• Moulded in Polypropylene, have excellent clarity and very good chemical resistance.
• These autoclavable Beakers have prominently raised graduation on the outer surface.
• Pouring a solution becomes very convenient because of its tapered spout.

Test Tube Stand

• An economical substitute for wire racks, here are these submersible autoclavable racks which are stackable when empty.
  
• These are available in different colours and are made of a special blend of Polypropylene that makes it sink in a water bath and maintain their stability even in agitated water.
  
• These space saving racks can easily be disassembled for cleaning purpose. The base is in the form of a grid with square openings and has fold up sides and end bars that lock into rack tops.
• Particulars :
  13mm x 90 Tubes, 16mm x 60 Tubes, 20mm x 4 0 Tubes, 25mm x 24 Tubes

Reagent Bottle

• These narrow mouth reagent bottles are available in Polypropylene as well as Polyethylene. The PP bottles are rigid, translucent and have excellent contact clarity. These bottles can be autoclaved filled as well as empty.
  
• On the other hand, the Polypropylene cap has a built in seal ring to make these bottles leak proof.
• Capacity : 60ml, 125ml, 250ml, 500ml, 1000ml.

Wash Bottle

• Polylab Wash Bottles are made of low density Polyethylene which gives these bottles a translucent and unbreakable character. Solution can be poured easily by squeezing the bottle lightly.
  
• The cap is fitted with a flezible polyethylene delivery tube which can be aimed wherever required.
• Material : Low Density Polyethylene

Aspirator Bottle

• Polylab Aspirator Bottles are made of polypropylene and are therefore much lighter than glass.
  
• These are autoclavable, durable and dependable. The leakproof spigot screwed to the bottle body requires only a half turn to open or close.
  
• These bottles are used for storing or dispensing distilled water and other laboratory solutions. Threads should be totally disengaged before autoclaving.
• Capacity : 5 L, 10 L

Conical Flask

• Made of Polypropylene, these cone shaped flasks are rigid, translucent and autoclavable. The screw cap keeps the contents of the flask contamination free and makes the flask leakproof. Threads should be disengaged before autoclaving.
• Capacity : 100ml, 250ml, 500ml

Measuring Cylinder

• Polylab Measuring Cylinder, moulded in Polypropylene, are single piece cylinders.
• These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad base provides good stability.
• Material : Polypropylene

Burette

• This burette has a transparent acrylic body and a leakproof stopcock fitted with a self lubricating PTFE plug. Each burette is individually calibrated to give maximum accuracy.
• Acrylic body is unaffected by dilute.

Volumetric Flask

• Polylab Volumetric Flasks, blown in Polypropylene, are strong, unbreakable and have good contact clarity. These autoclavable flasks are provided with screw caps to prevent leakage.
• Capacity : 25ml, 50ml, 100ml, 250ml, 500ml, 1000ml

Buchner Funnel

• Moulded in Polypropylene, these two piece funnels are light weight, easy to clean and autoclavable.
  
• The top portion can be snap fitted with the lower one forming a vaccum seal which does not require greasing.
  
• The base of the top portion has a perforated filter plate.