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In a chemical laboratory it is not so recommended to lubricate stoppers with a grease; this grease can be dissolved by reactants and the experiment become compromised. But some exceptions exist.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agovery carefully apply a lubricant and use a turning motion. do not force the tubing into the stopper
Wiki User
∙ 14y agoIt is just used as a lubricant to make the insertion easier.
Wiki User
∙ 14y agoIt's used as a lubricant to make insertion easier.
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What is the purpose of wetting the glass tubing before inserting into a stopper?
What is the purpose of wetting the glass tubing before inserting into a stopper?
When inserting glass tubing why is it important that you wear safety goggles and gloves or cover the tubing and stopper with protective pads of cloth?
If you are placing the tube into a hot liquid or a hot tube into a cold liquid, you are running the chance of it exploding and trust me, no one likes glass in their eyes or hands.
What is the use of cork borer in the laboratory?
A cork borer is used to make a hole through the middle of a cork stopper, usually in order to insert a delivery tube through it. Now that synthetic rubber bungs can be readily bought with the holes already made, and interchangeable ground glass joints are relatively cheaper than they used to be, cork stoppers are used less frequently. If you do need to use the procedure, get someone to show you how to do it safely, particularly the insertion of the glass tube when the hole is made.
What is a rubber stopper used for in chemistry?
Rubber stoppers are widely used for the commercial, industrial and scientific markets. They are made from different types of rubber and available in various sizes and styles depending on applications.What are Rubber Stoppers used for?Possible uses of rubber stoppers are wide and varied such as :Mechanical StopBumpersVibration MountGrippersClampsSticky feet for platformFits into Test Tubes, Boiling FlaskPipe stoppersPaint masksTube plugsDoor stopperThe kind of rubber stopper used in chemical laboratories is a plug which fits into the top of a test tube or flask, often with a hole or holes bored in it for the insertion of a piece of glass tubing. They used to be made of cork but rubber is less likely to disintegrate and get into the contents of the flask or tube.
What is the correct method of removing a glass stopper?
Between The Second And Thrid Fingers
What is the purpose of wetting the glass tubing before inserting into a stopper?
What is the purpose of wetting the glass tubing before inserting into a stopper?
What are the safety precautions and techniques when inserting a glass tubing in a rubber stopper?
never attempt to insert glass tubing that has a jagged end, all glass tubing should be fire polished before its inserted into a rubber stopper. Use water or glycerin as a lubricant at the end of the glass tubing before inserting it into the rubber stopper. ask teacher for proper lubricant. Protect hands and fingers by wearing leather gloves or placing a folded cloth between your hands and the tubing. hold it as close as possible to the part it is inserted to the rubber stopper. always point the tubing away from the palm of your hand that holds the stopper. use a twisting motion and push the tubing into the stopper. At the end of the experiment put on leather gloves or place the folded cloth between your hands and the tubing and remover the stoppers from the tubing to keep them from sticking to the glass. if it wont budge, use lubricant.
Why should be cork and glass tubing be moistened with water and glycerin respectively?
I have no idea what you are really talking about exactly, but I assume you are referring to using water to lubricate a glass tube before trying to push it through a rubber stopper with a hole in it. The water will help the glass slide through the small rubber opening, which can be sticky otherwise.
When magnesium reacts quickly with hydrochloric acis to produce hydrogen gas in a glass tube with a rubber stopper why would the rubber stopper burst of?
rubber stopper burst up because it has strong afinity with hydrogen
Before inserting the glass tubing into a stopper why is it nesessary to use a lubricant?
The purpose is to allow an easy insertion.
What are the definition corks and glass plate?
See these two questions for the answer:[http://wiki.answers.com/Q/What_is_a_rubber_stopper_or_cork_stopper_and_how_are_they_usedWhat is a rubber stopper or cork stopper and how are they used?]and[http://wiki.answers.com/Q/What_is_a_glass_plate_and_how_is_it_usedWhat is a glass plate and how is it used?]
I have a beautiful glass globe hummingbird feeder that has a rubber stopper. How can I stop the nectar from leaking out of the stopper?
If there is debris on the stopper it might be preventing a good seal. Try removing the rubber stopper and wipe it off to remove any debris that might be on it. Clean out the hole that the stopper goes into as well. This will help ensure a clean seal between the hole and the stopper. Put the stopper back into the hole, making sure it is a tight fit. If it still leaks you may need to buy a new stopper.
How do you make fire extinguisher working model?
hey! You will need the following things : 1) a hollow glass tube or a eye dropper 2) a big glass bottle 3) a bottle of vinegar 4) a box of baking soda 6 ) a rubber or cork stopper that fit the big bottle 7) paper towel and a rubber band 8) water First thing to is remove the rubber squeeze bulb on the eye dropper and keep the glass tube and make a hole slightly smaller than the glass tube in the rubber or cork bottle stopper and insert the glass tube in the stopper until the tip of tube come out of the stopper . ( Do this slowly ; so not to break the glass) Put baking soda on the sheet of paper towel and attract the corners to the other end of the tube to the rubber stopper securing with the rubber band than fill the big bottle: 1/3 full of vinegar and the other 1/3 with water leaving the bottle about half full Than carefully insert the rubber stopper on the big bottle with the bag of soda hanging above the vinegar water solution. Make sure it a tight seal on the bottle when you ready to use Tip the bottle over and wait a minute or two than the water will shoot out of the tip and you have a working Fire extinguisher I hope this help
How get glass stopper out of a glass bottle?
Grease the top of the bottle!
What are the reasons for the using glass-stopper bottles for acids and plastic stoppered bottles for bases?
If strong bases are present in the glass-stopper bottles, they may react with the glass and etch it or change the concentration of the base. Hence plastic-stopper bottles are used for bases.
When inserting glass tubing why is it important that you wear safety goggles and gloves or cover the tubing and stopper with protective pads of cloth?
If you are placing the tube into a hot liquid or a hot tube into a cold liquid, you are running the chance of it exploding and trust me, no one likes glass in their eyes or hands.
How do you insert a test tube into rubber stopper?
Use a lubricant and something to protect your hand, and push while twisting. Do it slowly so you don't break the glass rod and hurt your hand.
