3
Precautions
When the sample is turbid or colored,which will affect the test.Do not filter or decolorize the sample,in
case cause losing residual chlorine.Please use the water sample as a reference to zero the instrument
before testing,it could compensate effect of interference.
Indoor environment without direct sunlight,if not close the detection tank cover will not effect the
test.Outdoor environment with direct sunlight,please close the detection tank cover.
The instrument must be completed within 1 minute after adding the reagent,otherwise it will affect the
detection accuracy,and little reagent are insoluble will not affect the instrument.
Any liquid or foreign matter entering the measurement basin may damage the instrument,please to wipe
clean the basin.
When the concentration of residual chlorine of the sample is high,the dark red color appeared after
adding reagent will quickly fade away.Because the oxidized reagent is bleached by the residual
chlorine.If the concentration of the water sample exceeds the range of the instrument,please dilute the
water sample with distilled water or pure water(boil it and let it cool for use)by a certain multiple and
re-measure.The measured value multiplied by the dilution multiple is the actual concentration of the
water sample.
The reagent packaging bag is an easy-to-tear bag,which can be torn on any surface.
Please clean the cuvette after each test,and the straw needs to be cleaned several times;If the inner face
of the cuvette is dirty,please clean it with detergent,then rinse with clean water and dry it before use.
Do not expose the cuvette to organic solvents such as alcohol.
Please sure no water stains,scratches,dust,fingerprints etc. On the surface of the cuvette.
The water sample in the cuvette must have no bubbles,which will affect the accuracy of test.
