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Sample questions
According to the label, what is the minimum interval required between treatments for algae?
- 14 days
- 7 days
- 21 days
- 30 days
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The timing/weather section states to wait at least 14 days between treatments for algae.Which of the following is a target organism for Blue-Stone Crystals?
- Water hyacinth
- Mosquito larvae
- Terrestrial weeds
- Grasshoppers
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The label states the product is designed to control aquatic plants like water hyacinth and water willow.In which of the following environments can Blue-Stone Crystals be applied?
- Lakes, ponds, reservoirs, and irrigation systems
- Residential lawns and gardens
- Indoor potted plants only
- Forest floor mulch
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The label specifies use in various aquatic environments such as lakes, ponds, reservoirs, and irrigation systems.Which of the following is a required piece of eye protection for this product?
- Goggles with side shields
- Standard prescription eyeglasses
- Sunglasses
- Face shield only
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The PPE section requires protective eyewear such as goggles with side shields.What is the required minimum thickness for chemical-resistant gloves used when handling Blue-Stone Crystals?
- 14 mils thick
- 5 mils thick
- 10 mils thick
- 20 mils thick
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The PPE section specifies chemical-resistant gloves must be at least 14 mils thick.Under what condition is it restricted to use Blue-Stone Crystals in stormwater drain systems?
- Only when following specific local/state regulations for stormwater management
- Only during heavy rainfall events
- Only in areas with high dissolved organic carbon
- Only when using drip irrigation
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The restrictions state do not use in storm drains unless following specific local/state regulations for stormwater management.Which weather conditions should a technician avoid when applying this product?
- Temperature inversions or windy conditions
- High humidity and low light
- Extreme heat and direct sunlight
- Heavy rain and snow
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The label instructions state to avoid application during temperature inversions or windy conditions.When calculating the amount of product needed for algae or aquatic plants, what factors must be accounted for?
- Water volume in acre-feet and surface area in acres
- Soil pH and nitrogen levels
- Wind speed and humidity percentage
- Total depth of the water and temperature
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The mixing notes state calculations must account for water volume in acre-feet and surface area in acres.← All practice exams