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Sample questions
Under what condition can Natrix be applied in areas containing an active potable water intake?
- If the concentration is kept below 0.4 ppm
- If the concentration is kept below 1.0 ppm and the intake can be turned off
- If the water is flowing rather than still
- Only if the application is undiluted
Show answer
Do not apply at a concentration greater than 1.0 ppm of copper in areas containing an active potable water intake unless the water intake can be turned off.🔗 Source
Which PPE item is required for handling Natrix according to the label?
- Protective eyewear (goggles, safety glasses, or face shield)
- Respirator
- Chemical-resistant apron
- Rubber boots
Show answer
The label requires protective eyewear, specifically goggles, safety glasses, or a face shield.🔗 Source
In what type of water setting should Natrix be applied at a finished strength of 0.2 - 1.0 ppm?
- Still and quiescent waters
- Chemigation systems
- Flowing waters
- Potable water reservoirs
Show answer
For flowing waters, the finished strength should be 0.2 - 1.0 ppm.🔗 Source
Which of the following is NOT a permitted material for chemical-resistant gloves when handling Natrix?
- Nitrile Rubber
- Neoprene
- Latex
- Butyl Rubber
Show answer
Permitted glove materials include Barrier Laminate, Butyl Rubber, Nitrile Rubber, Neoprene, Polyethylene, or Polyvinyl chloride; Latex is not listed.🔗 Source
Which of the following is a target pest for Natrix?
- Zebra mussels
- Asian clams
- Nuisance snails
- All of the above
Show answer
Natrix is used to control invasive mollusks like zebra and quagga mussels, Asian and island clams, and nuisance snails.🔗 Source
When treating aquaculture ponds where fish are present, what is the maximum allowable copper concentration for a single application?
- 0.1 ppm
- 0.2 ppm
- 0.4 ppm
- 1.0 ppm
Show answer
For aquaculture, do not exceed 0.4 ppm of copper during any single application if fish are present.🔗 Source
According to the label, how should the application rate be adjusted for still and quiescent waters with high alkalinity (>50 ppm)?
- Use higher rates in harder water
- Use lower rates in harder water
- Maintain a constant 0.1 ppm regardless of hardness
- Only apply undiluted in hard water
Show answer
The label notes that for still and quiescent waters, use higher rates in harder water (>50 ppm alkalinity).🔗 Source
What is a critical restriction regarding the application of Natrix near vegetation?
- It may be applied to grass if diluted to 0.1 ppm
- Do not allow concentrated product to come in contact with crops, ornamentals, or grass
- It can be applied to desirable plants if the water is flowing
- It is safe for all desirable plants if the concentration is below 0.4 ppm
Show answer
The label states DO NOT apply in a way that concentrated product comes in contact with crops, ornamentals, grass or other desirable plants.🔗 Source
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