28
Tips for Best Accuracy
1.
Our lab testing with the Micro 20 meter has shown that zeroing and measuring of the sample
normally does not require any cell cover for accurate results, except in sunlight. To obtain
optimal accuracy when testing with the meter outdoors (sunlight), use the Mixing Cap/Cell
Cover when zeroing and reading the sample.
2.
Become familiar with the meter and the different tests by reading the instructions carefully.
3.
The Free Chlorine, Combined Chlorine, and Total Chlorine reagents are compliant for meeting
USEPA (4500–Cl G); ISO 7393/2; and German DIN 38408 G4–2 requirements.
4.
DPD will stain the CELL wall if allowed to remain in the CELL. To remove staining, rinse cell
thoroughly and
fi
ll with water. Then, add two (2) drops of bleach (5-8%) and clean with brush
until stain is removed. Caution: Avoid contact of bleach with eyes and clothing.
5.
Observe the dip time (as required for the test) for accurate results.
6.
Test immediately after
fi
lling the CELL with water sample when testing for oxidizers such as
Chlorine and Bromine.
7.
Be sure the CELL is
fi
lled to capacity, especially for pH and Total Alkalinity.
8.
Rinse the CELL with clean water immediately after completing each test. Some reagents may
stain the CELL if not rinsed shortly after use. Other reagents including Cyanuric Acid, Chloride,
and Calcium Hardness may coat the CELL wall. It is recommended, after these tests, to use
the Cell Cleaning Brush with water to clean the CELL.
9.
Just before testing, rinse the sample CELL with the sample water several times to get a
representative sample. (Use deionized or distilled water for rinsing if you have a limited amount
of sample).
10. Store the meter and all test materials out of direct sunlight and away from chemical
storage areas.
11. Minimize exposure of meter and test reagents to heat above 100°F (38°C).
12. Dry the outside of the meter when testing is complete or before storage of the meter.
13. When running a DPD–1 Free Chlorine test AFTER a Total Chlorine DPD–3, a Total Chlorine
DPD–4, or a Chlorine High Range test, rinsing is very important to remove residual KI, which
may interfere.
14. Each
eXact
®
Strip Micro is valid for ONLY one test. Discard strip after single use in regular
refuse that is inaccessible to children and pets.
15. Each bottle of eXact
®
Strip Micro contains the quantity of strips notated on the bottle. Due to
the strip slitting process, you may
fi
nd one or two strips that are noticeably smaller or larger in
width than the normal strips in the bottle. These should be discarded. Using these strips may
give unreliable results.
16. Each table supplied has a unique revision number located in the bottom right corner of the
table. We recommended that you visit www.sensafe.com regularly for any updated revisions.
17. The
eXact
®
Micro 20 Meter is not compatible for use with DPD–1, DPD–3, and DPD–4 powder
pillows, tablets, and liquids available from other manufacturers. Accurate results can only be
guaranteed by using genuine eXact
®
Micro strips or reagents (reorder information on page 31).
18. Remove batteries when meter is not used for more than a month (Warranty Requirement).
19. It is recommended that Pool and Spa samples for oxidizers (such as Chlorine) be taken 18
inches below the surface as follows: submerge meter with open cell facing down 18 inches, and
then turn meter upright at that depth to
fi
ll the cell. Remove meter from water with the sample
for testing.
