Taylor K-8000, User Manual, Page: 26 / 100

2-8 TTi
®
Colorimeter User’s Manual
Part 2 Testing Primer
PERFORMING A TEST
• Carefully read test instructions before beginning a test. Instructions may change from time to time so it is
particularly important to review the procedure each time a reagent pack is purchased.
• Follow procedure exactly.
• For proper sample volume, be sure the low point of the meniscus sits on the correct fill mark when viewed
at eye level.
• Hold reagent bottles vertically when dispensing liquids.
• Add the precise amount of reagent specified.
• Before inserting a sample cell into the sample cell compartment, hold the sample cell by the cap and wipe
off any moisture or fingerprints on the glass using a clean, lint-free cloth.
• During operation, place the TTi
®
Colorimeter on a stable surface that is reasonably level. When using it as
a handheld device, keep the meter horizontal.
• Compare your results with the previous results from the sampling location. Do the results make sense?
If you get an inexplicable result, take a new sample and retest. We recommend graphing your data with
statistical process control software to facilitate comparisons.
CLEANING SAMPLE CELLS
Sample cells must be clean inside and out as well as scratch-free to prevent optical interference in the test
procedure.
• Use the foam brush (supplied) or a soft, nonabrasive cloth and water or mild detergent. Rinse thoroughly
with deionized or distilled water. NOTE: Test methods may recommend additional cleaning procedures.
• At least once a week, clean all sampling containers and sample cells with a 1:1 solution of hydrochloric
acid (Taylor reagent R-1305J) and high-purity water.
• Upon completing a test, flush out the sample cell with fresh sample water to avoid having residual
contaminate the next test.
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