Health Hazard Data
Polystyrene is a plastic. I think you meant "polystyrene foam", which would be correct.
does McDonald's serve coffee in polystyrene containers
It would depend on the context and location, but globally, air pollution from vehicles and industrial activities is often considered a significant health hazard due to its widespread impact on respiratory health and potential for long-term health effects such as heart disease and cancer.
The hazard symbols that may be found on drain cleaner could include: corrosive symbol (causes burns), health hazard symbol (may be harmful if ingested/inhaled), and environmental hazard symbol (harmful to aquatic life).
No, iron is denser and heavier than polystyrene. An iron ball would weigh more than a polystyrene ball of the same size.
Most likely - it would need to be tested for mold.
There are many types of hazards. Three examples of hazards would be hazardous waste which includes toxic chemicals. Another hazard would be health hazards caused by communicable disease. The third example of hazards would be pollution and greenhouse gases.
Well.....FREAKIN GET THE MOLD OUT OF YOUR HOUSE! Or I would move houses, because it's a real health hazard
Someone looking to purchase polystyrene balls can find them at any hobby or craft store. Michael's would carry polystyrene balls. Online, one can purchase them at Amazon or eBay.
Polystyrene is a very poor conductor of heat. This is why its used as an insulator in some products.
If 1 ml of a 10^-3 dilution is plated, the number of colonies would be 20 colonies (20000 cfu/ml / 10^-3). Whether 20000 cfu/ml is a health hazard would depend on the specific bacteria present and their pathogenicity, as well as individual health conditions. Generally, a high level of bacteria in food products can pose a health risk, especially for vulnerable populations.