15
eXact
®
Strip Micro
test procedure (SPECIAL NOTES)
1
Total Alkalinity
—
A.
For water temperatures above 95°F (35°C), remove and discard the strip when
the timer displays “10”.
B.
If result is “HI” and a value is required, you will need to purchase eXact
®
Strip
Micro AL Range Extender (Part No. 486665) and visit us online at
sensafe.com/exact-micro-20-with-bluetooth/ for detailed instructions.
2
Calcium Hardness
—
A.
This test is accurate in water with Chloride < 2,000 ppm as NaCl. Chloride
levels from 12,000 to 24,000 ppm as NaCl give 10-15% error. For samples with Chloride levels greater
than 25,000 ppm as NaCl, contact ITS for a look-up table.
B.
For water temperatures above 95°F
(35°C), remove the strip when the timer displays “10”.
C.
Even if all pads are not fully immersed in water,
do not bend the strip. Make sure the strip touches the bottom of the CELL while dipping the strip.
3
Chloride
— If sample pH is high (>9), adjust pH to 5–6 using Vinegar.
4
Chlorine High Range
—
A.
Use a 10 second dip time if water temperature is above 113°F (40°C).
B.
INTERFERENCES: Oxidizers such as Chlorine Dioxide, Bromine, Iodine, Ozone, Bromamines, and
Permanganate will give false positive readings.
5
Chromium (VI)
—
A.
The strip is 8mm wide and needs to be angled in order to fit in the
CELL
.
B.
This test has no interferences from Chromium (III).
6
Total Hardness, HR & LR
—
A.
Positive interferences are observed if the test sample contains Barium.
Interferences also observed if the test sample contains Copper, Lead, Cobalt, or Nickel.
B.
Below 90ppm
of Total Hardness HR, false positive results may occur.
C.
For Total Hardness HR, Total Alkalinity must
be in the range of 40-220ppm (as CaCO3).
D.
The pH of the sample for Total Hardness High Range
should be between 6.9 and 7.2.
E.
If the Total Alkalinity of the sample is greater than 220ppm, you will
need to purchase eXact
®
Strip Micro THH Conditioner (Part No. 486666) and visit us online at sensafe.
com/exact-micro-20-with-bluetooth/ for detailed instructions.
7
Hydrogen Peroxide
— If sample temperature is less than 42°F (6°C), allow sample to reach room
temperature before testing. Otherwise, you can press READ again to start an additional 20 second
countdown/100 second count-up and use this new result. The extra reaction time is needed in cold samples.
8
Nitrate
— The
CELL
needs to be cleaned with brush and distilled water after each test. If any zinc dust
is adhering to the
CELL
wall, it will affect results.
9
Peracetic Acid
— This test has no interferences from Hydrogen Peroxide.
10
pH
—
A.
Requires water sample with a Total Alkalinity minimum of 20ppm.
B.
For water temperatures
above 95°F (35°C), remove and discard the strip when the timer displays “10”.
C.
Clean CELL with
brush prior to testing to remove any residual buffers that may adhere from DPD or other tests.
11
Phosphate
—
A.
Clean
CELL
with 0.1N HCl, Distilled Vinegar (5%), or Muriatic Acid (diluted 1:40
with H2O) before testing.
B.
If running multiple tests in a row, using the same water sample, the
CELL
does not have to be rinsed or cleaned with acid between each test. It is recommended that the
CELL
be rinsed three times with the sample water.
C.
The calibration of the meter is based on a water
temperature between 15°C (59°F) and 31°C (88°F). If temperature is below 15°C (59°F), your final
Phosphate value may read low. This test can also be used for salt water testing.
Some test procedures require the combination of more than one test strip and/or liquid reagents
Please follow the step–by–step procedures as outlined in pages 18 – 27 to ensure the best accuracy.
For more tips on best accuracy,
see page 28.
Any deviation from the outlined procedure, could result in inaccurate test results. Please take caution
to testing notes. If your required procedure is not listed in this manual or if you have any questions,
feel free to contact us at [email protected]
