ZIMSEC O Level Combined Science Notes: Pesticide Warning Symbols
- Pesticides are graded according to their toxicity i.e.
- According to how harmful they are to humans.
- Every pesticide must have a label that clearly shows its “danger” level show.
- There are four common danger levels of chemicals.
- For example Methyl bromide used in tobacco seedbed fumigation.
- Must be handled with extreme care.
- The poison is extremely lethal,
- Full protective clothing including gloves, coveralls and goggles, breathing mask must be worn when handling such chemicals.
- Means the poison is very dangerous.
- Must be handled with care and all the safety precautions must be followed.
- Should not be used in the home.
- Poisonous pesticide.
- Is less toxic but must still be handled with caution.
- May be used in the home.
- For example Killem and other aerosolized sprays.
To access more topics go to the Combined Science Notes page.