System Overview
Chapter 4
Zetasizer Nano Basic Guide
Page 4-23
In case of failure....
If a
failure
message is displayed for either test type, repeat the measurement as
described here.
a.
Insert a new sample in a new cuvette/cell and measure it,
ensuring that
:
The correct cell type is used.
The measurement chamber lid is closed properly.
There are no bubbles in the sample.
The cell is clean and free from fingerprints, grease and dust.
b.
In addition, for a
Size test
:
Check that between 1.0mL and 1.5mL is injected into the cuvette (giving a
sample depth of 10mm to 15mm as shown in Step 4 above).
Check that the triangle on the cuvette faces forward (see step 5 above).
c.
In addition, for a
Zeta potential test
:
Wet another cell thoroughly using ethanol or methanol as described ear-
lier, then check that there are no scratches on it. Wipe it dry with a lint-free
cloth (we recommend camera lens cleaning pads).
Do not try to clean
the optical area on the front of the “U” part of the cell as this will
cause small scratches which can distort the result
.
Check that the capillary cell is full.
Ensure that the cell plugs are inserted firmly.
Finally....
If the test continues to fail, contact the local Malvern representative (before calling
make a note of the instrument’s serial number.)
Viewing the results
To view the result, select one of the Installation tests
records
- Size or Zeta - and
then click one of the
Report
tabs. The following examples displayed on the next
page show:
The
Intensity PSD (M
) report for a
size
test (top report).
The
Zeta potential (M)
report for a
zeta potential
test (lower report).
Zetaszier Nano Basic Guide (Man0486-1.0).book Page 23 Monday, September 10, 2012 2:19 PM
