Taylor K-8000, User Manual, Page: 25 / 100

2-7 TTi
®
Colorimeter User’s Manual
Part 2 Testing Primer
should be used because subjecting them to constant fluctuations in temperature will cause them to degrade
faster. Ideal storage temperatures are between 36°F–85°F (2°C–29°C), preferably in an environment without
big temperature swings.
Generally speaking, a reagent’s suitability for testing is suspect if it is over one year old, if it is not its usual
color, if there are floating particles that do not dissolve when shaken, if it has begun to stain its container, or if
it has crusted around the tip of the dropper bottle.
INSERTING AND ALIGNING SAMPLE CELLS
Taylor test procedures use either a 25 mm or 15 mm viewdepth sample cell, depending on which provides the
best combination of sensitivity and useable range. The 25 mm sample cell has greater viewdepth and employs
a screw thread cap. The 15 mm sample cell has less viewdepth and employs a plug cap. Test instructions specify
which sample cell to use.
For the most accurate result, align the sample cell correctly when inserting it in the sample cell compartment.
High-quality sample cells are supplied for use with the instrument but even minor variations in wall thickness
or diameter can cause slight variations in results if sample cells are not inserted in a consistent manner. Use the
following techniques to insert and align the 25 mm and 15 mm sample cells into the sample cell compartment:
25 mm Sample Cell - Partially insert the sample cell into the sample cell compartment. Align the arrow
on the sample cell with the notch on the meter; then gently push the sample cell down (without rotating)
until it rests on the base of the sample cell compartment.
15 mm Sample Cell - Align the raised line on the sample cell cap with the arrow on the sample cell. Insert
the sample cell into the sample cell compartment and align the raised line on the sample cell cap with the
notch on the meter.
25 mm Sample Cell
notch
15 mm Sample Cell
raised line
notch