水中的銅 Copper 如同可溶性鹽或懸浮固體。濃度超過0.1毫克/升對調節藻類和浮游生物的生長是有用的。範圍在0.02至0.1毫克/升對於某些魚類是有毒的, 因此若將其用於治療魚類疾病即需要仔細監控。Hach水質試紙可以協助在現場的檢測人員在幾分鐘內測試許多水樣，並在現場進行評估。

Copper exists in water as a soluble salt or as suspended solids. Concentrations exceeding 0.1 mg/L are useful for controlling algae and plankton growth. Quantities ranging from 0.02 to 0.1 mg/L are toxic for some fish, so its use for treating fish disease requires careful monitoring. With Hach Water Quality Test Strips, technicians in the field can test many samples in only a few minutes, and make immediate evaluations on-site. No measuring, set-up, clean-up, or chemical handling are necessary. Hach test strips are also used in laboratories all over the world for pre-test screening-to detect the presence of materials that might interfere with lab testing. Contains 25 tests.

Range: 0 - 3 ppm Cu

Hach水質試紙無須測量，設定，清理或是化學處理。Hach水質試紙廣泛應用於全球各地實驗室, 預先測試過濾以查找出可能與干擾實驗室測試的物質存在。