GUIDE QUESTIONS AND VERIFIED
ANSWERS LATEST UPDATE
GRADED A+
Falsifiable concentrates (EC or E) - ANSWER- Formulations made up
of the technical material, solvents and emulsifiers. Some agitation is
required. Once dry, pesticide residue is barley visible.
Wettable Powder (WP) - ANSWER- These formulations are made by
impregnating or coating an appropriate powder with the technical
insecticide. Wettable Powders do not dissolve in water and frequent
agitation is usually required. Heavy applications may leave visible
deposits.
Soluble Powders (SP) - ANSWER- May look like Wettable Powders
but they dissolve and form true solutions when dilute with water.
Less visible than Wettable Powders after drying, Frequent agitation
is not required.
Suspension Concentrates (SC) - ANSWER- Products made with small
particles suspended in oil solvents or water. Easy mix, require little
,or no agitation and remain stable for a long time. Have a greatly
reduced inhalation hazard because they come in a liquid form.
Flowable Liquids - ANSWER- Contains concentrated water
dispersible powders in a liquid form. These powders may stay
suspended for a long time. Flowable liquids are easy to handle and
have excellent dilution properties.
Microencapsulated Formulations (ME) - ANSWER- manufactured by
suspending liquid or solid pesticide particles in microcapsules. By
altering the membrane of the microcapsules, the residual
performance, speed and action and odor can be affected. May clog
sprayers and leave visible residue.
Dusts (D) - ANSWER- Made by combining and insecticide with a
dust diluent (usually inert) Some products such as Boric Acid Dusts,
are almost totally comprised of Boric Acid and may have small
amounts of other ingredients added. Drifts are a major issue.
Granules - ANSWER- Made by coating or impregnating an inert
carrier with an insecticide. Made of materials, such as, clay, corn
cobs, pecan shells, saw dust, etc. Formulations are ready to use and
used mostly for exterior perimeter of buildings for the control of
crawling insects. Also is water activated.
Baits - ANSWER- Combination of a insecticide with an attractive
carrier/food that the target pest prefers. Pheromone attractants are
, added to increase the effects. Comes in forms of gels, granules,
paste, pellets, powders or liquids.
Fumigants - ANSWER- toxic gases such as methyl bromine that are
used to kill pests.
Vitamin-K - ANSWER- The antidote to consuming Anti-coagulants.
LD-50 - ANSWER- the amount of a chemical that kills 50% of the
animals in a test population.
LC-50 - ANSWER- the lethal concentration in air or water required
to kill 50% of the population.
Acute Toxicity - ANSWER- adverse effects occur within a short period
after exposure to toxin.
Chronic Toxicity - ANSWER- Repeated exposure over time to sub-
lethal doses of chemicals.
Signal Word - ANSWER- Indicates how toxic a product is and how
dangerous.
Danger - ANSWER- Category 1 Highly toxic LD-50 (0-50 mg/kg) a
taste to a teaspoon could kill you.