A beaker cover is called a rubber stopper or metal stopper(depends on what the stopper is made of).
rubber stopper burst up because it has strong afinity with hydrogen
The term "puck-stopper"is just one of many names used to refer to the goal-keeper in hockey.
The stopper of a chemical reagent container should be handled carefully for two reasons. Firstly, it may contain chemical residues which can be dangerous. Additionally, if the stopper is dirtied it may contaminate the reagent in the bottle when the stopper is put back on.
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.
the botox hospital/fire department
Season 8, Episode 12 - 'Show stopper'
Water bucket.
it is stopper =]
Styptic pencil is a bleeding stopper.
The oldest living fire aunt is 983 years old it is held in captivity in a scincetificl reserch center in goldersburgington rhode island.
The Crystal Stopper was created in 1912.
Janina Stopper is 157 cm.
A CORK stopper is a plug for a bottle made of cork
The past tense of stopper is stopped.
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.
On most push/pull stoppers the knob part that you pull on unscrews from the stopper, and under that is a slot for a screwdriver tighten or remove the stopper. On stoppers with non-removable knobs, there is a screw (usually phillips) under the stopper which can be accessed with the stopper in the up position and unscrewed to remove the stopper.