All sharps containers must be stored upright,be puncture-resistant, be labeled or color-coded red & leakproof on both the sides & the bottom! The last one is the one missing!
The list above is incomplete. Here is what’s missing
A: Sides and bottom must be leak-proof
B: Top must be leak-proof
C: Attached to a wall
And the answer is A: Sides and bottom must be leak-proof
The above are ways of protecting yourself when handling contaminated sharps. A small cut or pierce from a contaminated sharp can result in various infections like HIV, Hepatitis, and other blood borne pathogens. Contaminated sharps must be puncture-resistant. They are appropriately labeled or color-coded red. The red warns everyone that these contents are hazardous. These containers must be closable (have a lid or a door for closing the container). These containers must also be kept upright to keep any liquids or sharps from spilling. The sides and bottom of these containers must be leakproof.
Punch card is the oldest computer storage; followed by tape and then floppy disk. Hard drive goes back as far as floppy but is still in use today. CD/DVD/BR discs are all later storage but are also used for storing music and videos. USB flash, SD card, SSD and cloud storage are the common technologies used today for data storage.