Water I.D. Primelab 2.0, Manual

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Disorders: i) Cyanides (CN⁻): To ensure full color development, the test sample has to be
enriched with 0.2 ml of formaldehyde and wait 4 minutes. The analysis can now be performed
as described. The test result must be multiplied by 1.02.ii) Silver (Ag⁺): Silver can cause
blackening of the test sample. Add saturated potassium chloride solution (10 drops per 75 ml).
Then the test sample had to be poured through a fine filter. The analysis is now carried out as
described with 10 ml of the filtered liquid.
T65/204 T65/204