Table of Contents
What are rubber bulbs used for?
A rubber (aspirating) bulb can be used to remove mucus from a baby’s nose or mouth when a cold or allergies make it hard for the baby to eat or sleep. It is best to use the rubber bulb to clean the baby’s nose before feedings and before the baby goes to sleep.
What do you never use to pipette liquids?
Do not ever use your mouth to pull the liquid into a pipet. This is the most common method of becoming poisoned in a chemical laboratory or becoming infected in a clinical laboratory. Mouth pipetting is forbidden in the chemistry department.
Why is safety bulb used?
Three way safety bulb (pipette filler bulb) is used for pipeting. The attachment is placed over the mouth of the pipet. Squeeze the air valve (A) and the bulb simultaneously to empty the bulb of air. When the liquid is above the specified volume, stop squeezing the suction valve (S).
Why do we use bulb pipette?
A volumetric pipette, bulb pipette, or belly pipette allows extremely accurate measurement (to four significant figures) of the volume of a solution. It is calibrated to deliver accurately a fixed volume of liquid.
What are the different types of pipette bulb?
Bulb (15)
Is it safe to fill a pipette by suction?
Since pipettes are glass, you can snap the pipette in two as you force it into the bulb and subsequently drive the broken portion into your hand. Use great care when inserting a pipette into a bulb. If possible, use a suction device where the pipette rests up against it to seal rather than being fully inserted.
What should you never do with a pipette?
10 Ways to Abuse a Pipette
- Forgetting your head. When using a pipette, always use a tip.
- The wrong guy for the job. Make sure your tip is the right one for the volume you are pipetting.
- Pushing it too far.
- It’s a pipette, not a plunger.
- Leaving it lying around.
- Using it as a backscratcher.
- Holding it wrong.
- Dialing it up.
What is a safety bulb?
Safety coated lamps are designed to prevent injury and contamination resulting from the glass fragments created by an accidental breakage.
When should a pipette be wiped off?
Medtech Quizes
| Term | Definition |
|---|---|
| a pipette should be wiped off.. | before lowering the meniscus to the calibration mark |
| most pure chemical grade | reagent or analytical grade (AR) |
| During an Ivy bleeding time procedure, the blood pressure cuff should be positioned | Above the antecubital crease |
Do you put the pipet into the bulb?
Press it firmly over the top of the pipet, but DO NOT INSERT THE PIPET INTO THE BULB!! Release the pressure on the bulb and allow the solution to flow into the pipet until it is above the volume mark. Do not allow the solution to reach the bulb.
Why is a rubber safety bulb always used when working with?
A rubber bulb is what you find on the back of an enema syringe, or a battery tester, (hygrometer) It is also found in an outboard engine’s fuel line. In most cases it is used to expel air when squeezed and then when returning to its normal shape, drawing a liquid into a tube.
What’s the proper way to clean a water Pipet?
Cleaning the Pipet. In order for the pipet to deliver the proper amount of solution, it must be properly cleaned. Using the appropriate technique for filling the pipet, draw distilled water into the pipet until it almost reaches the bulb. Remove the bulb and allow the water to drain.
How do you put a Pipet in a beaker?
Insert the tip of the pipet into the beaker of solution so that it is about 1/4” from the bottom. Be sure not to press the tip against the bottom of the container. 3. If you are right handed, hold the pipet in your right hand, leaving your index finger free to place over the top of the pipet. With your left hand, squeeze the pipet bulb.