palintest Compact Ozone Meter User manual

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Table of Contents
1GENERAL INFORMATION......................................... 3
Introduction to Palintest Photometers............................ 3
Kit Contents ................................................................ 4
Instrument Layout ....................................................... 5
2 BACKGROUND INFORMATION ................................ 6
Introduction to Colorimetric Measurement. .................... 6
Blanks and Sam les..................................................... 8
Taking a Reading......................................................... 8
Care and Maintenance ................................................. 9
Viewing the Instrument Memory ..................................10
Backlight O eration ....................................................10
3 TE T PROCEDURE ................................................ 11
Ozone........................................................................12
4 IN TRUMENT ......................................................... 13
Technical S ecification ................................................15
5TROUBLE HOOTING .............................................. 17
Chemistry Troubleshooting ..........................................17
Com liance ................................................................18
Sam le Dilution and Collection.....................................19
6 REORDER CODE and ACCE ORIE .................... 20
IN T.40

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1 GENERAL INFORMATION
Introduction to Palintest Photometers
Thank you for urchasing this Palintest roduct.
Palintest instruments and reagents are renowned as
being sim le to use, whilst roviding ra id and reliable
results for the testing of water. Our instruments are of
the highest quality and fully water roof.
Palintest’s ex erience, built-u over the last 50 years,
is the reason why our instruments and reagents are
used in laboratories, treatment lants, leisure facilities
and industrial remises throughout the world.
Our roducts are ackaged carefully and the roduct
should reach you in the state it left our factory; if this
roduct has reached you in a state that is less than
satisfactory, lease contact your local Palintest branch
or your local distributor.
This booklet describes the best way to use Palintest
roducts, and rovides instructions for the range of
water tests that can be erformed using this instrument.
Palintest instruments are calibrated for Palintest
reagents. To guarantee the high accuracy and
performance that our instruments give, you must
ensure that only Palintest reagents are used with
Palintest instruments. Failure to do so can lead to
erroneous results.

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Kit Contents
These instructions are designed for use with the
Palintest Ozone meter.
The kit contains :-
Ozone Instrument
Instrument Instructions
Crushing Rods
Test Tube Brush
Photometer Tubes
Reagents :-
DPD No 4 Tablets
For re-ordering codes and accessories, please
see ection 6.

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Instrument Layout
Test Tube holder
Screen
“Read Sam le” button
“Menu” button
“Blank Sam le” button
“On/Off” button

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2 BACKGROUND INFORMATION
Introduction to Colorimetric Measurement.
Palintest tests are based on measuring the intensity of
colours roduced by Palintest reagents and using
Palintest hotometers to measure that intensity of colour.
This is colorimetry and can be defined as any technique
used to evaluate an unknown colour in reference to
known colours.
To avoid subjective measurement between test sam les
and colour standards, a colorimeter can be used for
quantitative measurement of the amount of coloured light
absorbed by a sam le (with reagents added) in reference
to a untreated sam le (blank).
White light is made u of many different wavelengths of
light.
A colorimeter asses a white light beam through an
o tical filter which transmits only one articular band
of wavelength of light to the hotodetector where it is
measured.
The difference in the amount of coloured light transmitted
by a colourless sam le (blank) and the amount of coloured
light transmitted by a coloured sam le is a measurement
of the amount of coloured light absorbed by the sam le.

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The use of filters im roves the sensitivity of this
rocess and choice of the correct o tical filter (and,
therefore, the correct wavelength) of light is im ortant.
It is interesting to note that the filter that gives the
most sensitive calibration for a test factor is the
com lementary colour of the test sam le. For exam le,
the chlorine test roduces a ink colour ro ortional to
the chlorine concentration in the sam le (the greater
the chlorine concentration, the darker the ink colour).
In this case, a green filter gives the greatest sensitivity
as a inkish-red solution absorbs mostly green light.
Palintest hotometers calculate and then dis lay the test
results directly in milligrams er litre (mg/l) of the test
factor, by com aring the amount of absorbed light to
the calibration data rogrammed into the instrument.
Photodetector
Blue Solution
(450 - 500nm)
Red Filter
(625 – 635nm)
Red light only passes
through the filter. All
other light is absorbed.
I
ncident
Wavelengths of blue light
plus s
mall quantities of red
light pass through the
solution.

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Blanks and amples
Palintest hotometers use a BLANK tube to set the
instrument to blank and a SAMPLE tube to take the reading.
A BLANK tube is a test tube filled with untreated water
sam le. A SAMPLE tube is a test tube containing the sam le
to which reagents have been added in accordance with the
test rocedure described.
The blank setting is held in memory. It is not necessary to reset
the blank each time a reading is taken if the water sam les to
be tested are from the same body of water and the conditions
of use are the same. The blank setting can be confirmed if
necessary by taking a test reading on the blank tube.
Taking a Reading
1 Press the ‘on/off’ button to start the unit.
2 Press the ‘menu’ button until the test you wish to erform
is indicated on the screen.
3 Insert your blank tube and ress the ‘blank sam le’
button.
4 An image dis laying a blank tube will be dis layed on
screen. When this is re laced by 0.00 the instrument is
finished blanking and ready to take a reading.
5 Remove your blank tube and re lace it with the sam le
tube. Press the ‘Read Sam le’ button to take a reading.
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The result will be dis layed on screen in mg/l.

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Care and Maintenance
The handling of hotometer tubes is im ortant to
ensure continuing accuracy. Scratches, finger- rints
and water dro lets on the tube or inside the light
chamber can cause inaccurate results. It is im erative
that the tubes and light chamber are clean and dry.
The glassware must be clean and defect-free. Scratches
and abrasions will ermanently affect the accuracy of the
readings. Tubes can be acid washed eriodically.
Here are some hints on kee ing the hotometer clean,
free from contamination and in good working order :-
1 Pre are your work lace before use. Make sure that
you have enough s ace to work with the hotometer
and with the reagent systems.
2 Do not our out sam les or re are the tests
directly over the instrument.
3 Always ca the test tubes after re aring the blank
and test sam le.
4 Wi e test tubes on a clean tissue to remove dri s
or condensation before lacing in the hotometer.
5 Do not leave tubes standing in the hotometer test
chamber. Remove the tubes immediately after each test.
6 Immediately wi e u any dri s or s illages onto the
instrument or into the test chamber with a clean tissue.

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7 Kee the instrument clean. Clean the test chamber
regularly using a moistened tissue or cotton bud.
8 Kee the instrument in a clean, dry lace when it is
not in use. Kee it on a clean, dry bench away from
chemicals, lace it in a storage cu board or kee it in
a carrying case.
Viewing the Instrument Memory
To view the revious results (10 results are stored
within the instrument memory), hold the ‘menu’ button
down for at least three seconds whilst the dis lay
showing the selected test or result is on the screen.
To scroll through the 10 different results, simply
press the ‘menu’ button. To exit the results
menu, press the ‘menu’ button again for at least
three seconds.
Backlight Operation
The backlight can be turned on and off by holding the
‘On/Off’ button for a two second eriod during ower on.