Aquarium Pharmaceuticals' Copper Test Kit tests copper levels in water from 0 to 4 ppm, and measures both free and chelated copper. Always monitor aquarium copper levels when medicating. For use in Freshwater or Saltwater Aquariums or Ponds.

• The accurate way to test aquarium quality
• Tests copper levels from 0 to 4 ppm
• Suitable for fresh and saltwater