Hanna Instruments

Copper High Range Colorimeter HI702 Hanna Checker

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Compatible with fresh or saltwater!

No longer do you need to read color charts, trust Hanna's HI702 Copper Checker to know the precise amount of copper in your aquarium water. The High Range Colorimeter gives greater precision over previous models and gives you a digital reading on a large LCD display. Copper is generally used in saltwater aquariums to help treat for common pests and diseases that may plague fish and is entirely safe at certain levels and having a high-quality testing solution is very important. The Hanna HI702 will let you monitor your aquariums total copper levels as you increase and decrease, to treat any issues you fish may encounter.

  • Portable and easy to transport
  • Simple one-button operation
  • Reliable and repeatable



Range - 0.0 - 5.0 ppm

Resolution - 0.01 ppm

Accuracy - ±0.05 ppm ±5% of reading @ 25°C/77°F

Light Source - 575nm LED

Light Detector - Silicon Photocell

Method - Adaptation of the EPA method. The reaction between copper and the bicinchoninate reagent causes a purple tint in the sample

Battery - 1.5V AAA (included)

Auto-Off - After 10 minutes of non-use

Dimensions - 3.2" x 2.4" x 1.5"


What's Included?

1x Hanna HI702 Checker

2x Testing Cuvettes

6x HI702 Reagents

1x Instruction Card


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Product Questions

Does this tester test chelated copper as in Copper Safe products accurately?
Question by: john mcalpin on Jan 7, 2023, 3:55 PM
Yes, this will test for chelated copper and any copper used in copper treatment products.
Answer by: William Reed (BRS Staff) on Jan 12, 2023, 4:56 PM
What would range should your copper be in a qt tank?
Question by: TomL on Jun 28, 2018, 11:43 AM
Copper Power = 2.5ppm concentration,

Cupramine = .5ppm concentration,

Cuprion =.2ppm concentration
Answer by: Chad on Jun 28, 2018, 2:14 PM