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SenSafe® John's Copper (NCW-481142)

Part No: NCW-481142

This Copper colour test strip, from our SenSafe® brand allows for quick and accurate testing of Free Copper in water (Cu+1 and Cu+2).

This is a simple dip and read test and you will have your result within 2 minutes.


Our patented aperture strips are unique in the way the water flows through them and detects the Free Copper more accurately and at a sensitivity that enables low detections of free copper in water (as low as 0.0 ppm and up to 2.0 ppm).

This test can be used to detect copper in water in various environments and permits the measurement of typical copper levels in well water, tap water, pools and streams. The precise colour chart is found on the back of the bottle. We use trace amounts of chemicals on our strips which makes them extremely safe and non-hazardous. They are considered as Articles under OSHA and do not require SDS sheets. This is our new eco packging, No interference from iron and works in a wide pH range.

Temperature Compensation Chart


0, 0.05, 0.1, 0.2, 0.4, 1, 2 ppm (mg/L)

Test Quantity

30 tests



Free Delivery? Options available on domestic orders over £50 & international orders over £100.

For smaller value orders, Royal Mail provide great value international delivery options.