- Why should you never use cracked glassware?
- Why the cleaning of glassware is very important?
- What should you do if you break a piece of glassware?
- When should glassware be washed?
- What do you do when your lab coat catches on fire?
- Can glass shards kill you?
- What is the first thing you should always do before starting a lab?
- What are signs of dirty glassware?
- How will you disinfect the glassware?
- Why chromic acid is used for cleaning glassware?
- Why should we never use broken or chipped tools in lab during experiments?
- How do you dry glassware?
- What are the most common laboratory accidents?
- What should you do if you cut yourself in the lab?
- Why is glass dangerous?
Why should you never use cracked glassware?
Never use glassware that is etched, cracked, chipped, nicked, or scratched.
It is more prone to break, especially under vacuum applications or if heated..
Why the cleaning of glassware is very important?
Likewise, presence of impurities in glass labware can distort the meniscus and can prevent one from getting the correct results out of the science lab experiment. Keeping the laboratory glassware physically neat and clean, free of grease, and bacteria is therefore of the utmost importance.
What should you do if you break a piece of glassware?
Broken Lab Glassware InjuriesAllow the wound to bleed, but do not massage it to remove any remaining broken glass.Wash the wound with warm water and soap.Apply first aid and seek medical attention.Follow your facility’s safety plan if the injury is severe or if you were exposed to infectious materials.More items…•
When should glassware be washed?
Wash with hot soapy water, rinse thoroughly with tap water, then rinse 3-4 times with deionized water. Be sure the final rinses sheet off of the glass. Burets need to be thoroughly clean to be used for quantitative lab work. In some cases, you may need to soak the glassware overnight in soapy water.
What do you do when your lab coat catches on fire?
Extinguish burning clothing by using the drop-and-roll technique or by dousing with cold water or using the emergency shower if it is immediately available. If your clothing catches fire, do not run or take other action that will fan the flames. Immediately drop down and roll on the floor to extinguish the flames.
Can glass shards kill you?
Popular belief for many centuries is that ground-up glass (i.e., glass broken into tiny fragments) can kill if swallowed. In fact, this is a myth, as it is largely ineffective.
What is the first thing you should always do before starting a lab?
5 Tips to Know Before Your First Lab ClassMake sure you understand the experiment before starting an experiment. … Wear the right kind of clothing and gear. … Be aware of safety equipment and where it’s located. … Fill out your lab form as you conduct your experiment. … Complete your lab report as soon as possible after the lab.
What are signs of dirty glassware?
Common signs of dirty glassware include bubbles adhering to the inside of a glass (in the liquid portion of the beer), poor foam formation or head retention, and a lack of lacing on the inside of the glass as the beer is consumed.
How will you disinfect the glassware?
Cover with water, add a fair quantity of soft soap or detergent, and boil for 30 minutes. Rinse the tubes, clean with a brush, rinse and dry with the usual precautions. It is imperative when washing serological glassware that all acids, alkali, and detergents be completely removed.
Why chromic acid is used for cleaning glassware?
Because a solution of chromic acid in sulfuric acid (also known as a sulfochromic mixture or chromosulfuric acid) is a powerful oxidizing agent, it can be used to clean laboratory glassware, particularly of otherwise insoluble organic residues. This application has declined due to environmental concerns.
Why should we never use broken or chipped tools in lab during experiments?
Dispose of the glassware in the proper container. Glassware that is chipped, cracked or broken can cause cuts. Material placed in broken or chipped glassware may leak.
How do you dry glassware?
Drying Glassware If glassware is to be used immediately after washing and must be dry, rinse it two to three times with acetone. This will remove any water and will evaporate quickly. While it’s not a great idea to blow air into glassware to dry it, sometimes you can apply a vacuum to evaporate the solvent.
What are the most common laboratory accidents?
The three most common types of laboratory accidents are chemical spills, fires and explosions, and personnel injuries.
What should you do if you cut yourself in the lab?
Give it to your lab instructor or dispose of it as directed in a broken glass disposal container. If you cut yourself, immediately inform your lab instructor.
Why is glass dangerous?
Warning. Broken glass and other sharps are physical hazards. Broken glass also has the potential to be a health hazard if it is contaminated with toxic chemicals, blood, or infectious substances which may enter the body through a cut or puncture.