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.
6
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.

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3 TE T PROCEDURE
The methodologies listed here are for use with the
Palintest Ozone instrument.
Before attem ting to do any tests, ensure you read
‘Blanks and Sam les’ and the ‘Care and Maintenance’
sections in Section 2.
To elect the Test
Press the MENU key. The selected test will a ear on
the dis lay :-
• O3 Ozone

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Ozone
Range
O
3
: 0.01 – 3 mg/l
Wavelength – 530 nm
Method - DPD
Ozone
1 Rinse test tube with sam le leaving two or three
dro s in the tube.
2 Add one DPD No 4 tablet, crush the tablet with the
crushing rod and then fill the test tube with sam le
to the 10 ml mark. Mix gently with the rod to
dissolve the tablet and ensure any remaining
articles have settled.
3 Take hotometer reading immediately as the
result may drift on standing. Ensure the dis lay
shows the test range that you desire.
Reagents
AP 056 - DPD No 4 Tablets

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4 IN TRUMENT
For an illustration on the instrument layout, see Section 1.
For information on erforming a test, see Section 2.
Replacing the Batteries
Re lace the battery when the symbol remains on the
dis lay. Use 2 x 1.5v alkaline ‘AA’ batteries, MN 1500,
LR6, E91, AM3 or equivalent. Remove batteries from
instrument if it is to be stored or left unused for a long
eriod of time.
Liability
Under no circumstances shall Palintest Ltd be liable for
loss of life, ro erty, rofits or other damages incurred
through the use or misuse of their roducts.
Disposal
Waste Electrical and Electronic Equi ment (WEEE).
Natural resources were used in the roduction of this
equi ment. This equi ment may contain materials that
are hazardous to health and the environment.

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To avoid harm to the environment and natural resources,
the use of a ro riate recycling systems is recommended.
The crossed out wheeled bin symbol on the meter
encourages you to use these systems when dis osing of
this equi ment.
Error Messages
The hotometer will dis lay an error message in the unlikely
event of malfunction. These error messages are mainly
designed to assist service staff in diagnosing instrument faults.
In the event of an error message a earing on the
hotometer dis lay, contact your local Palintest Technical
Services De artment or your local distributor.
Error messages are coded 7, 8 and 9 and all relate to
blanking the instrument. In the first instance, the user
should check the o erating technique and sam le
clarity. If these are in order, then these errors indicate
a fault in the o tics :-
Error 7 indicates too much light – remove the instrument
from bright light.
Error 8 indicates a fault with one of the o tics com onents, and
requires service assistance.
Error 9 indicates not enough light – follow ‘Cleaning the
O tics’ routine.
If the roblem ersists, contact your local Palintest
branch or distributor.

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Technical pecification
Instrument Direct-reading colorimeter
O tics
Palintest dual LED light source
o tical system with narrow band
wavelength filter and
hotodetectors
Wavelength 530nm
Wavelength
Tolerance ± 2nm
Filter Bandwidth 10nm
LCD Dis lay 128 x 64 ixel screen
Instrument O erating
Tem erature Range 0 – 50°C
Water roof Rating IP 67
Test Cells 25 mm diameter tubes
Blank/Zero Setting Held in memory or
reset for each reading
Power Su ly 2 x 1.5V ‘AA’ batteries -
auto switch-off setting
Size 150 x 65 x 42 mm
Weight 200g (including batteries)

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Cleaning the Optics
Any build-u of dirt or de osits may interru t light
transmission and affect readings.
To clean the o tics gently clean the internal surfaces of
the o tics with a soft, non-abrasive cloth. Do not use
solvents. De osits may be removed with a slightly
dam ened cotton bud.
The hotometer is fitted with long-life light sources and
contains no user-serviceable com onents. If the instrument
requires servicing or re air, this can be arranged through
our Technical Services De artment.
ervicing and Warranty
Palintest Photometers are guaranteed for a eriod of
two years from the date of urchase, excluding
accidental damage or damage caused by unauthorised
re air or misuse. Should re air be necessary, contact
our Technical Services De artment quoting the serial
number. This guarantee does not affect your statutory
rights.
An instrument failure due to test cell contamination is not
covered by the Palintest instrument warranty.

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5 TROUBLE HOOTING
Chemistry Troubleshooting
It is very important to specify Palintest Photometer
Grade tablets when ordering replacement reagents
for this instrument. Using an alternative grade of
tablet may lead to a turbid sample which in turn
leads to inaccurate results.
Ozone Method
Ozone, free and combined chlorine and bromine
residuals all react with DPD No 4 reagent to roduce a
ink colour, ro ortional to the concentration resent
in the sam le.
Glycine destroys ozone in the sam le and the colour
roduced in the DPD test then corres onds to the
chlorine and bromine only.
The ozone content is thus obtained by the difference
between the test readings with and without glycine.
Procedure
1 Rinse test tube with sam le leaving 2 - 3 dro s of
sam le in the tube.
2 Add one DPD No 4 tablet, crush tablet and then
fill the test tube with sam le to the 10 ml mark.
Mix to dissolve the tablet.

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3 Take the reading using the Ozone Meter (Reading
A). This re resents the disinfectant residual of
ozone lus chlorine and bromine, ex ressed in
terms of ozone mg/l.
Correction for Chlorine and Bromine
1 Fill a test tube with sam le to the 10 ml mark. Add
one DPD Glycine tablet, crush and mix to dissolve.
2 Take a second clean test tube and add 2 - 3 dro s
of solution from the first tube. Add one DPD No 4
tablet, crush and then add the remainder of the
solution to make u to the 10 ml mark. Mix to
dissolve the tablet.
3 Take the reading using the Ozone Meter (Reading
B). This re resents the ozone equivalent of the
chlorine lus bromine resent :-
Ozone mg/l = Reading A – Reading B
Compliance
The Palintest hotometer series has been inde endently
tested and has earned the Euro ean CE Mark of
Com liance for electro-magnetic com atibility (EMC).

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ample Dilution and Collection
When the test result is outside the concentration range
of the test, the hotometer will dis lay the '>' symbol.
In such cases it is necessary to dilute the ool water
and re eat the test. A Palintest dilution tube (PT 512)
is available to dilute sam les accurately.
If the result is close to the to of the scale (eg ozone
above 2.5 mg/l) and a more accurate result is required, a
dilution may be used to increase the sensitivity of the test.
The following oints should be observed when taking
water sam les from the ool. Take ool water sam les
from below the water surface. Collect in a clean lastic
bottle and fill to the neck so as to avoid unnecessary
airs ace.
The free chlorine or bromine may dro during sam le
storage. Other arameters such as H and alkalinity
can also change. Sam les should therefore be tested
as soon as ossible after sam le collection.

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V
3
: 0
5
/10
6 REORDER CODE and ACCE ORIE
Product Code
Reagent Description
50 Tests 250 Tests
DPD No 4 Tablet Pack PM 056 AP 056
DPD Glycine - AT 056
Accessories Description Product Code
Test Tube Brush PT 663
Re lacement Photometer Tubes (x5) PT 555
Photometer Tube Rack PT 545
Crushing Rods (x10) PT 502
Check Standards PTC 043