Performance

Measuring Range

(5) to 50 mg/L

Sampling Time

3 minutes

Detecting Limit

5 mg/L

Colour Change

White → Red

Reaction Principle

Ni + Dimethyl glyoxime → Complexcompound

Shelf Life

3 Years

Corrections for temperature &humidity

Unnecessary

Store the tubes at cool and darkplace.

Possible coexisting substances and theirinterferences (NOTE)

Substance

Concentration

Interference

Change colour by itselfto

Zn

20 mg/L

-

No (1000mg/L)

Al

30 mg/L

-

No (1000mg/L)

Co

3 mg/ L

+

Greenish brown (20mg/L)

^CN-

10 mg/L

-

 No (100mg/L)

^Fe2+

5 mg/L

+

Brown (60mg/L)

Fe³⁺

100 mg/L

-

No (1000mg/L)

Cu

5 mg/L

+

Reddish brown / yellowishGreen(50mg/L)