HACH LANGE 2100N Grundlegende Bedienungsanleitung Seite 13

Turbidity measurement procedure
1. Rinse a clean, 2. Clean the sample
empty sample cell two cells with a soft, lint-free
times with the solution cloth to remove water
to be measured and spots and fingerprints.
drain to waste. Fill to
the line (about 30 mL)
with sample and
immediately put the cap
on the sample cell.
7. Read and record the
value when stable.
Note: To send (via
RS232) a measurement
record, push PRINT.
Measurement techniques
Measurements may be made with different operation mode settings and
optional accessories.
3. Apply a small bead 4. Use the oiling cloth
of silicone oil from the provided to apply the oil
top to the bottom of the equally to the surface of
sample cells. the sample cells.
Remove the excess oil.
Make sure that the
sample cells are almost
dry.
Calibrate the instrument whenever the sample cell pathlength is
changed.
5. Gently and slowly 6. Put the sample cell
invert the sample cell to in the sample cell
fully mix the sample. Be holder with the triangle
careful not to add air on the sample cell
bubbles. aligned with the
reference mark on the
sample cell holder.
Close the cover.
English 13