Chemical Safety
Diluted bleach must be used within ___ days of dilution.
What is 7 days?
Standard lab attire.
What is long pants (covering the ankles), close-toed shoes, and a shirt that covers the upper torso?
Effective steam sterilization requires four elements: pressure, temperature, steam, and _____.
What is time?
An EHS document that contains information about which chemicals can be disposed of in the sink.
What is Sewer Disposal List?
Most hazards encountered in the laboratory fall into one of these three categories.
What is chemical, biological, or physical?
Two or more chemicals that, when mixed, react and create a hazard.
What is chemical incompatibility?
Nitrile gloves do not provide protection against these chemicals.
What is concentrated acids (acetic, sulfuric, formic, nitric)?
Note: They also provide very poor protection from alcohols (ethanol, methanol, etc.)
Frequency at which emergency eyewash stations must be tested.
What is weekly?
Autoclaved biohazard waste needs to be placed inside this for disposal.
These types of injuries are the most common type found in lab workers.
What is musculoskeletal disorders?
Examples: carpal tunnel syndrome, elbow tendinitis, muscle strains, & overexertion disorders)
The chemical names for this category of chemical often end in "hydroxide."
What are Bases?
This protective equipment should be worn when working with a sonicator.
What is ear plugs?
Blocking the vents or making sudden movements inside a biosafety cabinet will provide a path for contamination of cell cultures due to ______ ______.
What is disrupted airflow?
The disposal of most chemical containers is not regulated once they are empty. EHS considers a container empty when it contains less than this percentage of the original contents.
What is 3%?
In the case of a fire (or fire drill), members of the Yates lab are supposed to meet in this location.
What is the west lawn of the Animal Science building?
Cryogenic gases (like liquid nitrogen) can cause this by displacing oxygen due to their very large expansion ratios.
What is asphyxiation?
The best lab coats have these two features.
What are ribbed cuffs and flame-retardant material?
The two chemicals in the lab that should be used inside the fume hood (as much as is possible).
What is 2-mercaptoethanol and paraformaldehyde?
Computers and other electronic equipment should be disposed of in this manner.
What is through the UNL Inventory Department (Surplus).
The acronym "ALARA" stands for this (in radiation safety).
What is As Low As Reasonably Achievable?
The loose fitting lid on a liquid nitrogen dewar is designed to prevent this potential hazard.
What is over-pressurization?
The standardized measure to determine the maximum number of defective items considered acceptable in a batch of gloves.
What is Acceptable Quality Level (AQL)?
The #1 rule of cryostat safety.
What is ensuring the handwheel is locked before placing hands inside the chamber?
Preserved specimens should be disposed of in this manner.
What is through incineration or collection by EHS.
The threshold for minor and major spill levels for C-14 and H-3.
What is 1 mCi (C-14) and 10 mCi (H-3)?