What is one reason why you would need to grease the ground glass joints of your distillation kit?
Ground-glass joints and stopcocks should never be used when dry. although ground-glass surfaces seal well without the use of lubricants, it is advisable to lubricate them to prevent sticking and breakage.
What glassware is used in distillation?
Glass retorts are used for distillation. Drying pistols are used to free samples from traces of water, or other impurities.
Which is a part of the fractional distillation apparatus setup?
Laboratory setup. Fractional distillation in a laboratory makes use of common laboratory glassware and apparatuses, typically including a Bunsen burner, a round-bottomed flask and a condenser, as well as the single-purpose fractionating column.
Why is ground joint glass apparatus better?
Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from interchangeable commonly available parts. To connect the hollow inner spaces of the glassware components, ground glass joints are hollow on the inside and open at the ends, except for stoppers.
Are ground glass stoppers air tight?
A ground glass joint is designed to be airtight and is actually commonly used in labs. The static friction of the frosted glass on the stopper, or glass joint, and in the neck of the decanter, form an airtight seal.
How do you properly grease a ground glass joint?
• GREASING GROUND GLASS JOINTS The grease should be used only sparingly by applying thin streaks to the top (wider) half of the male joint and then seat the joint by rotating gently.
What equipment do you need for distillation?
Thre are three essential pieces of distillation equipment needed to carry out the process; Reboiler or Pot – Used to heat the source liquid. Condenser – The heated vapour is cooled back to a liquid state. Receiver Flask – The device into which the concentrate/distillate is collected.
What is a distillation kit?
The distillation apparatus, commonly called a ‘still’, consists of a vessel for plant material and water, a condenser to cool and condense the vapour produced and a method of collection, or ‘receiver’. Material from the appropriate part of the plant for extraction is immersed in water in the distillation vessel.
How do you free ground glass joints?
If you can empty your glassware of chemicals before separating the joint, then safe ways of separating stuck joints include using a suitable solvent or lubricating oil to dissolve chemical residue in the joint, soaking the joints if required, and/or using a sonicator or ultrasonic cleaner.
How should you remove oil and grease from a ground glass joint?
First, rinse the glassware with an organic solvent-such as acetone-to remove any excess organic oils. Deposit this rinsing into the appropriate safety container. Next, mix warm tap water and soap. Using this and an appropriate brush, scrub the inside of the glassware.
What can you do with a basic distillation kit?
Basic kit will do the majority of experiments in Organic Laboratory Tech-niques, Deluxe kits will do all experiments. Kits come with variety of components such as vials, condensers, tubes, the NEW Hickman-Hinkle spinning distillation column,retrieval…
What kind of glass is used in distillation?
This borosilicate glass 2L Biomass Flask features a 60/50 ground glass outer joint at the top and a 24/40 ground inner joint at the bottom. It is a replacement part used in our 2L Distillation Apparatus. NC-13214
What kind of glass is in round bottom distillation flask?
Includes: 500ml Round Bottom Borosilicate Flask with Side Tube 300mm Graham Condenser 250ml Erlenmeyer Flask Glass Stopper Support Stand (6″X9″) with 24″ Rod … This distillation set, made from heat-resistant borosilicate glass, is often purchased to produce small amounts of essential oils and perfumes.