you have an error message on one of the instrument
of the HI 93711 series, clean the DEL (green light)
and the light catcher inside the cell with a cotton
swab dipped into alcohol. Be sure that the cuvet
is clean too.
C219 syrup analyser is a simple instrument to use,
but is also very sophisticated technologically. The
instrument takes readings of light absorbtion, much
the same as color spectrophotometers which cost much
this unit operates by the same principles for measuring
light intensity as the spectrophotometers. The technology
used in these units, was developed by Hanna Instruments
and has been proven in other types of our precision
instruments (the C200 series of multiparameter analysers.)
using any type of precision instruments, certain
steps must be followed. The following steps will
guide you through the operations of the C219 analyser
sure that the instrument has not been physically
damaged before using.
the unit into an adequate power source (using
the 110VAC power adapter)
the "On/Off" button, to start the unit.
The unit will perform a series of self diagnostic
tests to check that the unit is functioning correctly.
the square cuvette recommended by Hanna Instruments
and pour in the Glycerin as indicated in the operators
the cuvette of Glycerin into the measuring chamber
in the unit.
Press on the CAL button to calibrate the unit
your sample of syrup to be measured in another
cuvette and record the batch or lot number of
the sample before the actual classification.
- Always check the cuvets to make sure they are
in new condition and do not have any signs of
defects which are visible to the naked eye (scratches,
- Never touch the sides of the cuvettes with your
will affect the accuracy of the light readings.
- Always make sure that the cuvettes are inserted
into the measuring chamber straight up and not
at a slight angle. A slight angle in insertion
will give incorrect readings of the purity.
containing syrup should only be used once for
measuring, and only with the sample that was poured
into it the first time. It is not advisable to
try to reuse or wash out cuvettes to reuse. This
practice would lead to contamination of the samples,
and would give incorrect readings of product purity.
samples of syrup poured into cuvettes will have
a life span or duration of approximately two (2)
hours. During this time period, bacterial activity
will begin to change the coloration of the samples
in question, and will affect the light absorbtion
A clear syrup will have the tendancy to get darker
more rapidly when exposed to light and air.
points to watch for : The formation of air bubbles
in the cuvet.
It is very important to wait until all bubbles
are eliminated from the sample to avoid variable
readings. These bubbles can cause a big variation
in the light concentrations, again leading to
differences in quality levels.
of the above points are important to consider when
trying to get precise readings. After performing
the measurements a few times, one will become very
adept at the proper practices and procedures in
a short time. If after several attempts you find
that you are still having difficulties, or receiving
varying readings, do not hesitate to call the help
line number on the stricker affixed on your analyser.