Industrial Test Systems 486900-BT, Инструкция по эксплуатации

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Table 1:
Lead Test (PB MENU) Interferences
(Similar interferences can be expected for Mercury and Cadmium Tests.)
Ion Interference Level Ion Interference Level
Aluminum, Al
3+
2 mg/L Magnesium, Mg
2+
200 mg/L
Barium, Ba
2+
3 mg/L Manganese, Mn
2+
0.5 mg/L
Bromide, Br
–
20 mg/L Mercury, Hg
2+
0.01 mg/L
Cadmium, Cd
2+
0.07 mg/L Nickel, Ni
2+
1 mg/L
Calcium, Ca
2+
500 mg/L Nitrogen, Ammonium, NH
4
+
40 mg/L
Chloride, Cl
–
150 mg/L Nitrogen, Nitrate, NO3
–
20 mg/L
Chromium, Cr
3+
0.1 mg/L Nitrogen, Nitrite, N2
–
300 mg/L
Cobalt, Co
2+
1 mg/L Phosphate, PO4
3–
100 mg/L
Copper, Cu
2+
5 mg/L Sulfate, SO4
2–
200 mg/L
Fluoride, F
–
40 mg/L Tin, Sn
2+
0.2 mg/L
Iron, Fe
2+
0.2 mg/L Zinc, Zn
2+
2 mg/L
Iron, Fe
+3
0.1 mg/L Rev. 07/03/07
About your Water Sample
Kit Specifications
If the water sample you are testing has a pH of 6.5 to 8.5, then the LEADQuick
™
Reagent
System will give valid results. If your water sample is below pH 6.5 or above pH 8.5, or has
a Total Alkalinity above 200 PPM; then the pH of the water needs to be adjusted to between
pH 7 and 8 before testing begins. Use 1.0N HCl or 1.0N NaOH to adjust the pH of your water
sample. Iron above 0.1 ppm can be present in well water samples. It is recommended that
the absence of iron be confirmed by the Iron Check Test (part number 480025). If your
results are different from what you expect, then after the test is completed, check the pH of
the reacted sample. The chemistry, to work properly, should have a final pH of 9.0 to 10.0. If
your pH is below 9.0, then add six drops of PB-2 in step 5. If pH is above 10.0, then add four
drops of PB-2 in step 5.
The test detects from 0 to 500 µg/L or ppb levels of Lead as Pb
2+
. The most accurate test
range will be 3 to 200 µg/L. For this range, the Test resolution is 1 ppb, minimum detection
is 3 µg/L, and accuracy is +/-3 µg/L or +/-6% (whichever is higher), when used with an
eXact
®
LEADQuick
™
Colorimeter. If lead level is above 500 µg/L (ppb), dilute sample with
lead-free water before retesting.
The MCL (Maximum Contaminant Levels allowed) for drinking water as set by the USEPA for
Pb
2+
is 15 µg/L (WHO is 10 µg/L); Mercury (Hg
2+
) is 2 µg/L; and Cadmium (Cd
2+
) is 5µg/L.