Natrix

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

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.

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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

Answer: The label requires protective eyewear, specifically goggles, safety glasses, or a face shield.

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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

Answer: For flowing waters, the finished strength should be 0.2 - 1.0 ppm.

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Which of the following is NOT a permitted material for chemical-resistant gloves when handling Natrix?

• Nitrile Rubber
• Neoprene
• Latex ✓
• Butyl Rubber

Answer: Permitted glove materials include Barrier Laminate, Butyl Rubber, Nitrile Rubber, Neoprene, Polyethylene, or Polyvinyl chloride; Latex is not listed.

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Which of the following is a target pest for Natrix?

• Zebra mussels
• Asian clams
• Nuisance snails
• All of the above ✓

Answer: Natrix is used to control invasive mollusks like zebra and quagga mussels, Asian and island clams, and nuisance snails.

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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

Answer: For aquaculture, do not exceed 0.4 ppm of copper during any single application if fish are present.

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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

Answer: The label notes that for still and quiescent waters, use higher rates in harder water (>50 ppm alkalinity).

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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

Answer: The label states DO NOT apply in a way that concentrated product comes in contact with crops, ornamentals, grass or other desirable plants.

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