palintest Pooltest 25 User manual

Pooltest 25
Operation Manual
ZI INST 7025B EN

2
V4 09/21
Chapter Page Chapter Page
Contents
Pooltest 25 Layout 4
Pooltest 25 Interface 4
Info Panel 4
Power Supply 6
Replacing Batteries 6
Start-up Screen 6
Mode Screen 6
Choose a Test 6
System Mode 6
Check Standard Mode 6
Log 7
Operator ID 7
Sample ID 8
USB Interface 9
Units 9
Dilution Factor 10
DPD Range 10
System Lock 10
Water Balance 10
Temperature 10
Language 10
Set Time/Set Date/Date Format 10
Time Out 11
Back Light 11
LCD Contrast 11
Version 11
Selecting Test Parameters 12
Dilution Factor 12
Blanking Pooltest 25 12
Reading with the Pooltest 25 13
Timer 14
Changing Result Units of Expression 14
Follow-on Tests 15
Check Standard Mode 22
Enter Check Standard Values 22
Check Standard Measurement 22
Photometric Testing Hints and Tips
Troubleshooting
Technical Specifications
Spares and Consumables
Pocket Sensor for TDS
(Engineer's Kit Only)
6
Introduction 3
Quick Start 4
1
2
Chapter Page Chapter Page
3Taking a Sample 5
4Starting up the Instrument 6
5
System Mode
7
Analysing Samples 12
7Test Methods 16
8Calibration/Validation 22
9Appendix 1 23
10 Appendix 2 24
11 Appendix 3 26
12 Appendix 4 27
13 Appendix 5 28
Important Information concerning Bluetooth®
The PalintestAqua Pal App that this instrument was designed to connect to, via Bluetooth, is no longer available. Connectivity is now
solely via USB.Therefore, all references to Bluetooth have been removed from this user manual. You may still notice menu options in
the instrument relating to Bluetooth and it remains installed and functional. However, it would require third-party software or
applications to be developed for it to be useable. Please contact Palintest should you require further information about this.

3
Introduction
1.0 Introduction
The Palintest Pooltest 25 is a direct-reading,
waterproof photometer for determining key water
quality parameters for swimming pools,
hydrotherapy pools, hot tubs and spas. Designed
for both portable and static use, the Pooltest 25
should always be used with genuine Palintest
reagents for optimal performance.
The fundamental operating technique applied to
the Pooltest 25 is based on the principles of optical
absorbance and scattering of visible light.
Optical absorbance techniques are based on the
use of Palintest (spectro)photometric reagents,
creating visible colours with specific analytes
upon reaction.The intensity of colour produced is
measured with the Pooltest 25 and the data
compared to the stored calibration data to deliver
the final result.
Optical scattering techniques produce small
particles to scatter the source beam, the amount
of scatter providing a result for the concentration
of parameter under test.
The Pooltest 25 is provided with programmed
methods for a comprehensive range of water
quality parameters. Upon choosing a test the
instrument automatically selects the required
parameters for accurate analysis including
wavelength and reaction time. On completion of
some tests optional follow-on tests are available
plus results can be converted to alternative units
of expression e.g. mg/l to ppm, N or NH3.
The Pooltest 25 offers a choice of connectivity
to download all or selected results via 4.0
wireless connectivity or USB connection.
The Pooltest 25 offers a choice of either mains
power via the USB port or using three 1.5V ‘AA’
batteries (supplied).
The Pooltest 25 is delivered with a two year
warranty and a full range of service, calibration
and technical support. Additional resources are
available at www.palintest.com relating to both
products and applications.
1

4
Numerical keys
for test selection
and text entry
Navigation
Keys
LCD screen
with backlight
On/Off
Light CapUSB Port
Adaptive Cuvette Holder
(do not insert finger!)
Quick Start
2.0 Quick Start
2.1 Pooltest 25 Layout
2.2 Pooltest 25 Interface
The LCD screen features a selectable backlight
with the screen separated into four clear, easy
to read zones.
1Mode or Test Identification.
2Dialogue screen - prompts and choices will be
displayed as a list. Select using up/down arrows.
3Info Panel - displays status icons, date/time
and Sample/Operator ID.
4Action select - choices are displayed as a row.
Use left/right arrows to select.
2.3 Info Panel Icons
1
2
3
4
Description
Battery status
Upper/lower case text/number entry
USB connected
Hard Drive/COM port mode
Icons
2

5
Taking a Sample
3.0 Taking a Sample
The first critical step in any analysis is taking a
representative sample. When selecting a sample
point a number of care points are recommended
as follows:
• Ensure the sample point is safe to access
and follow all relevant/required precautions
• When sampling from a tap or outlet, remove
any attachment and clean the tap/outlet with
a dry cloth before allowing to run for 1 minute
prior to sample collection
• When sampling from a pool or spa take the
sample as near as possible to the centre of
the pool and at least 20cm below the surface
of the water
• Rinse any sample container repeatedly with
the sample to prevent any cross contamination
from previous samples
• Once collected the sample must be processed
immediately or as quickly as possible, especially
for highly reactive species such as chlorine for
example. The use of a portable field test kit
makes this possible. However if the delay
between sample collection and analysis is likely
to be several hours chill the sample to preserve
and prevent potential sample deterioration
• Samples containing solid particles can interfere
with photometric analysis. Either allow solids
to settle and decant the clear liquid or filter
the sample prior to analysis
3

4
6
Starting up the Instrument
4.0 Starting up the Instrument
4.1 Power Supply
The Pooltest 25 is designed to be powered either
from alkaline batteries or via the USB port.
When operating on battery power, the battery level
is indicated on the Info Panel.A minimum voltage
of 3.0V is needed to operate the photometer and
a flashing battery symbol indicates a critically low
battery. Change batteries immediately or switch to
alternative USB power. The Pooltest 25 will
automatically power down when power is no longer
capable of providing acceptable performance.
To power via the USB port, use the supplied cable
connected either to the mains adaptor or a PC.The
USB icon will appear when the USB connection is
made and battery power will no longer be consumed.
The Pooltest 25 has a back-up battery mounted
internally to save instrument settings and data
during power loss and instrument idle periods.
4.2 Replacing Batteries
The battery compartment is located on the base
of the instrument and secured by four screws.
Remove the cover and install a complete set of
new batteries, observing the correct polarity as
indicated. Use 3 x 1.5V ‘AA’ alkaline batteries
or equivalent. See Appendix 2 for more details.
To avoid corrosion damage through leakage,
remove batteries from the instrument if it is to
be stored or left unused for a long period.
4.3 Start-up Screen
The default start screen on power up is the
‘Choose a Test’ screen.
To access the Mode menu press the left arrow key
to highlight ‘Back’ and press OK on the keypad.
To choose a test use the up/down arrows to scroll
through the list and press OK on the desired
parameter or use the direct access.
4.4 Mode Screen
The Pooltest 25 has three operating modes
as follows:
Choose a Test
The Choose a Test mode is the standard operating
mode for taking photometer readings and is the
default start-up screen on power up. See Section
8 for more information.
System Mode
Personalise your Pooltest 25 and manage
stored data within the System mode. Options
include setting Operator/Sample IDs,
interrogating the result log and defining the
instrument operating conditions. See Section
6 for further information.
Check Standard Mode
Validate performance of your Pooltest 25
using Palintest Check Standards.
See Section 9 for more information.

7
System Mode
5.0 System Mode
Personalise your Pooltest 25 and access the
data log via the System Mode.
Scroll up or down using the appropriate keys
to see all available options. The options and
available settings are as follows:
5.1 Log
The Pooltest 25 has an internal data log for up
to 1000 data points. The data is stored
automatically upon completion of the test and
automatically overwrites the oldest result when
the memory is full. The data log is unaffected by
power on/off.
Each data point consists of the following
information and is stored in a comma-separated
values (CSV) format:
Selecting Log offers two choices:
View - to view individual data points use the
up/down keys. Data is stored in chronological order
with the most recent result shown by default.
Scroll through results using the up/down arrows.
Select Back to return to the previous menu.
Clear - the entire log can be deleted from the
Pooltest 25 if the instrument is not locked (see
System Lock). Selecting Clear produces the
following screen:
Choose Yes to delete all data, No to return to
the previous screen.
Data can be downloaded via either (see Log
Transfer) or USB connection (see USB
Interface).
5.2 Operator ID
The Pooltest 25 offers the option to create up to 12
unique alphanumeric Operator IDs. Operator IDs are
added to the result data automatically but deleting
IDs does not affect the result log.
To create a new Operator ID, select Operator ID
and use the up/down keys to select a blank field.
Select New and press OK.
Alphanumeric characters are entered/edited using
the 0-9 keys or the up/down keys. Press and hold
the 1 key to toggle between upper case, lower
case and numeric characters.
5

5
8
System Mode
After entering a character, the cursor automatically
moves to the next position if no key is pressed.
Alternatively press the right key.
Up to 10 characters can be added for Operator IDs,
including spaces.
To edit characters use the left/right keys to select
the desired character. Press and hold the left key
to delete the character or change the character
using the entry mode.
When the Operator ID is correct press the OK
key to create the ID and return to the Operator ID
list. The new Operator ID will be displayed in the
Operator list.
Choose the Operator ID to be used by scrolling
through the list and pressing the OK key on the
desired choice. The instrument will return to the
System menu.
To modify or delete an existing Operator ID,
highlight the ID and select Edit. Choose either
Edit to modify the existing entry or Delete to
remove it from the list.
5.3 Sample ID
The Pooltest 25 offers the option to create up to 24
unique alphanumeric Sample IDs. Sample IDs are
added to the result data automatically but
deleting IDs does not affect the result log.
To create a new Sample ID, select Sample ID
and use the up/down keys to select a blank field.
Select New and press OK.
Alphanumeric characters are entered/edited using
the 0-9 keys or the up/down keys. Press and hold
the 1 key to toggle between upper and lower
case characters.
After entering a character, the cursor automatically
moves to the next position if no key is pressed.
Alternatively press the right key.
Up to 10 characters can be added for Sample IDs,
including spaces.
To edit characters use the left/right keys to select
the desired character. Press and hold the left key
to delete the character or change the character
using the entry mode.

9
When the Sample ID is correct press the OK key to
create the ID and return to the Sample ID list.The
new Sample ID will be displayed in the Sample list.
Choose the Sample ID to be used by scrolling through
the list and pressing the OK key on the desired choice.
The instrument will return to the System menu.
To modify or delete an existing Sample ID, highlight
the ID and select Edit. Choose either Edit to modify
the existing entry or Delete to remove it from the list
5.5 USB Interface
The waterproof USB interface provides both
communication between the Pooltest 25 and
a PC and an alternative mains power source via
the adaptor.
When connected the USB icon will appear, replacing
the battery icon in the Info Panel, as power will be
preferentially drawn from the external source.
The USB data interface has a choice of two
operating modes - Hard Drive and COM Port. The
current status of the USB connection is shown on
the Info panel when the USB lead is connected.
Toggle between COM Port and Hard Disk mode in the
System -> USB menu by selecting the desired option.
The USB connection supports software update and
data download through a simple ‘drag and drop’
approach when operated in Hard Disk mode.
Hard Drive
The instrument appears as a removable hard
drive when connected to a PC in Hard Disk mode.
Upon connection the remote drive will have the
following files included:
• Pooltest 25_***.afx.*** where *
represent version numbers of software -
this is the operating software for the
Pooltest 25
• Log.txt - the data log file stored in a
comma separated value (csv) format
Operating software or calibration library can
be updated by dragging a new version to the
instrument.
Downloading the result log is carried out by
dragging the LOG.txt to the local desktop and
opening the file with any program that can open
CSV format files.
COM Port
The instrument behaves as if connected to the PC
serial port via RS232 when connected in COM
Port mode, allowing remote control from an
external software system and data upload.
This allows backwards compatibility with software
written for earlier models of Palintest instruments.
In this mode, the PC requires installation of
a USB virtual COM Port driver, available from
www.palintest.com/know, and the availability
of software operating as a terminal server.
A large number of third-party software systems
are available to provide data upload and remote
control of testing using the COM port mode.
Please contact your local Palintest representative
for more details.
5.6 Units
The Pooltest 25 offers the choice of result expressed
in mg/l, ppm, mmol/l, µmol, g/l and µg/l.
Changing the result units will not affect the result log.
System Mode 5

10
5System Mode
5.7 Dilution Factor
When samples are above the test range, indicated
by >> on the result screen, a dilution procedure
can be used. Setting Dilution Factor to On will
prompt the Pooltest 25 to automatically request the
dilution factor when carrying out a test.
Change the dilution factor by using the up/down
arrows or manually type the dilution factor. The
instrument will automatically correct the result
for the dilution and display the corrected result
(which will also be stored in the result log).
The maximum dilution factor permitted is 99.
If the calculated result exceeds the available number
of permitted characters >> will be displayed.
NOTE: do not use sample dilution
when measuring pH or alkalinity.
5.8 DPD Range
The Pooltest 25 operates in a choice of DPD ranges,
depending on the pool treatment programme.
Two choices are available and only one range can
be used at any time:
0-5 the ‘standard range’ of 0-5mg/l (ppm) Cl2.
In this range the AP 011 and AP 031 DPD
reagent packs are suitable
0-10 the ‘extended range’ of 0-10mg/l (ppm) Cl2.
In this range the AP 013 DPD XF and AP
033 DPD XF/XT packs will be required to
carry out the testing.
The selected range of DPD will be indicated in the
Test List e.g.Test 001 Chlorine-Free/10 indicates
the extended range has been selected and the
DPD XF reagent should be used.
5.9 System Lock
To prevent unauthorised or inadvertent changes
to the System settings or log deletion a four digit
code can be used to lock several options.
The default code is set to 6812. To change the
System Lock code, follow the on-screen prompts
to choose a memorable four digit number.
When the System Lock is applied, the items
accessible within the System Mode are limited
until the unlock code is entered.Access is limited
to viewing the result log, adjusting the backlight,
contrast and settings.
5.10 Water Balance
Two options are available for the Test 77 Water
Balance scale:
Palintest uses the simplified Palintest scale
which assumes values for Total
Dissolved Solids (TDS) and temperature
and removes the need to measure
these parameters.
Langelier uses the results from a TDS/
temperature meter to calculate the
Langelier Saturation Index (LSI) value.
For more information, see both the test method on
page 26 and visit www.palintest.com\know for more
information regarding the importance of Water
Balance and the relationship between the two scales.
5.11 Temperature
Choose between ºC and ºF.The temperature setting
is used during the Langelier Saturation Index when
selected from the Water Balance option.
5.12 Language
Select the desired local language for operation,
choosing from English, French, Spanish, German,
Italian and Chinese (Mandarin). The selection of
language will also adjust appropriate tests and
units to local convention as required.
5.13 Set Time/Set Date/Date Format
All test results are recorded automatically in the
Data Log and appended with date and time (plus
additional information). Date and time are stored on
an internal clock, supported by a coin cell battery.
To correct the time select Set Time from the System menu.
Use the up/down keys to adjust the hour; press
the right key to select and adjust the minutes.

11
5
System Mode
Press OK when the correct time is set.
To correct the date select Set Date from the
System menu.
Use the up/down keys to adjust the day/month/year,
using the left/right keys to select the field.
Press OK when the correct date is set.
The Date Format can be set to DD/MM/YYYY or
MM/DD/YYYY as required. To select the required
format highlight the desired choice and press OK.
5.14 Time Out
When operating using battery power the Pooltest
25 provides automatic power-off as a power-
saving measure.Three settings are provided:
Normal 5 minutes
Long 15 minutes
Off (disables Time Out)
The time intervals begin after the last key is
pressed or activity takes place.
Time Out is automatically disabled when the
instrument is powered by USB supply and during
a data log transfer.
5.15 Back Light
The instrument display features a high intensity
backlight to support use in low light conditions.
The backlight is designed to use minimal energy
but activating will naturally consume battery
power more rapidly. The settings available are:
Backlight Auto-Dim Backlight activates on any
key press and dims after
15 seconds automatically.
Backlight On Backlight is on permanently
Backlight Off Backlight is off permanently
5.16 LCD Contrast
In addition to the Backlight, the default contrast
setting for the display can be adjusted using the
up/down keys when light conditions are difficult.
The display provides a sequence of alternating
squares to give visual indication of the correct
settings to apply.
When complete/acceptable press the OK key.
5.17 Version
The serial number of the instrument and the
software version are displayed.The instrument
serial number will be required for technical
support and servicing/warranty and can also
be found on the case of the instrument.

12
6System Mode
6.0 Analysing Samples
The Pooltest 25 provides simple, accurate and
reliable analysis of key pool, spa and other
aquatic samples. Selecting the required parameter
and performing the test are supported through on-
screen prompts and comprehensive test
instructions.
The principle of photometric testing is based on the
absorption or scattering of a measured intensity
of incident light compared to the light intensity
reaching the detector array. The light intensity is
determined as Transmittance (%T) or Absorbance
(A) and compared to calibration tables stored within
the Pooltest 25. The stored calibration tables
convert %T or A to results in a variety of units
(mg/l, ppm etc.) as defined in Section 6.6.
Calibration tables are defined by Palintest based
on the measurement of reference standards using
Palintest reagents. To achieve the best quality
results there are a small number of care points:
1Always use the provided light cap to prevent
ambient light affecting the results.
2Ensure Sample and Blank cuvettes are clean, dry
and inserted correctly into the sample chamber,
using the allocated orientation mark to align.
3Always blank the instrument with untreated
sample prior to analysis.
Additional guidance is provided in Appendix 1
Photometric Testing Hints and Tips
6.1 Selecting Test Parameters
The Pooltest 25 offers a number
of choices to select the parameter to test:
Test Number Entry - use the numeric keypad
to enter the unique Test Number to directly
access any programmed calibration.
Direct Entry - use the numeric keypad to
directly access the 10 most common tests with
a single key push.
Choose a Test - the full list of test parameters is
available by selecting Choose a Test and scrolling
using the up/down keys.When the desired parameter
is highlighted, press the OK key to access the
method.Tests are presented in Test Number order.
When the required test is selected the Pooltest 25
automatically selects the correct wavelength and sets
additional method parameters as required.
Test method protocols are defined in detail section 8,
including the reagents and accessories that may
be required.
When a test is selected, the Pooltest 25 will display
a number of screens and options to guide the
user through the testing process, as described in
the following pages.
6.2 Dilution Factor
If selected in the System menu, the initial screen will
request the defined Dilution Factor to apply to results.
If Dilution Factor is not active this screen will not
be shown.
Results shown on the final screen have automatically
been corrected for dilution prior to display.
Corrected results will also be stored in the log.
Note: if the System Lock is applied the Dilution
Factor functionality cannot be switched on or off
from the current status until the system is unlocked.
6.3 Blanking the Pooltest 25
Blanking the photometer is a key first step in
photometric analysis, effectively removing the
potential entrained sample colour and minor amounts
of turbidity from calculation of analytical results.
To blank the photometer, prepare a Blank cuvette
using untreated sample i.e. sample that has not
been reacted with any reagents. If the sample is
to be diluted or physically treated (filtered for
example) before analysis, use the same dilution/
treatment for the Blank cuvette.

13
6
Analysing Samples
When accessing the test method the Pooltest 25
will request the user to Insert Blank.
Insert the Blank cuvette and press OK.
The Pooltest 25 will determine the absorbance
due to the sample colour at all wavelengths
simultaneously and store in temporary memory
for use in analysis.
Upon successful blanking the Pooltest 25 will
automatically move to the Insert sample stage of
the analytical method.
If the sample is too highly coloured to support
effective blanking and subsequent analysis the error
message “Error 9 is caused by the blank cuvette being
too dark. Check the correct cuvette is being used”.
Ensure the blank cuvette is being used, not the
sample plus reagent cuvette. Sample colour can
be reduced by dilution with clean water; the
dilution selected should take account of the
expected concentration of parameter under test.
Blank results are stored in the temporary memory
of the Pooltest 25 and will be used for all
subsequent tests until:
• The instrument is powered down (temporary
memory is lost/deleted)
• A new Blank reading is taken - this option is
available on accessing any subsequent test at
the base of the screen. Repeat the blanking
process if the sample changes significantly
or a new sample is under test
• Some tests use a reversed blanking process
where a coloured blank cuvette may be required.
When changing between standard tests and
‘reverse blank’ test, a new blank will be
requested by the Pooltest 25.
If the blank value generated in this step is not
detectable an error message will be displayed
“Error 7 is caused by too much ambient light. Try
using the light cover provided with the instrument”.
See Appendix 1 Photometric Testing Hints and
Tips for more advice regarding effective blanking.
6.4 Reading Results with
the Pooltest 25
Assuming a suitable blank has been recorded,
the next step of the photometric analysis process
is to carry out the reading step.
Prepare a Sample cuvette following the method
instructions provided in Chapter 8.

14
6Analysing Samples
Select Read at the base of the screen and press OK.
At the Insert sample prompt, insert the sample
cuvette ensuring it is clean and dry and oriented
correctly using the location mark.
Press OK to begin the measurement process.
The screen will display Reading...
At the completion of the measurement process
the result is displayed on screen.
6.5 Timer
Many photometric methods require a reaction time
to develop, the recommended time period being
documented in the Palintest Phot
Book and included
as part of the method parameters
programmed into
the Pooltest 25.
Tests requiring a reaction time will have the option
to select an automatic timer to count down the
reaction time required. While in the Insert sample
screen use the right key to move the cursor to
highlight Timer.
The programmed reaction time will be displayed.
Press OK to Start the countdown.
Three options will be displayed:
Stop cancel the countdown timer
Exit exits the countdown screen and
returns to the Insert sample
screen. The countdown will
continue and the current time can
be seen by selecting Timer.At the
end of the countdown an audible
alarm will sound to indicate the
sample is ready to read. Select
OK to read the sample manually.
Exit and Read exits the countdown screen and
automatically reads the sample
at the completion of the allocated
time period.
6.6 Changing Result Units of Expression
Many chemical species have a number of
alternative units that can be used for reporting
results e.g. Phosphate can be expressed as PO4
or P for example.

15
6
Analysing Samples
Where alternative units of expression for results
are available the st symbols will be displayed
next to the current result units. Use the up/down
arrows to change the units of expression as
required. Values are modified automatically.
Results stored in the log will be in the units
selected on screen, changing the chemical species
will add an entry to the log showing the updated
result and species parameter selected.
6.7 Follow-on Tests
A number of photometric methods have additional
optional methods that can be applied, known as
Follow-on Tests e.g. Phot 008 Total Chlorine follows
Phot 007 Free Chlorine. Follow-on methods are
usually either based on further reagent addition to
the sample just measured for sequential parameters
or used to correct for potential/known interferences.
Follow-on tests are clearly defined in the Section 8
and, if available, are accessed via the Follow-on
option located at the right hand side of the options.
To access the Follow-on test, highlight Follow-on
and press OK. The next method is automatically
loaded and operated in the usual manner.
NOTE: if no viable result is produced during
the first stage of a sequential test method, the
Follow-on option will be automatically removed.

7
16
The Pooltest 25 provides simple test protocols
for the key parameters required to effectively
control swimming pools, hydrotherapy pools, spas
and hot tubs.
The tests available by number are as follows:
Test 1 Chlorine-Free/5 or Chlorine-Free/10
Standard Range: 0-5.00mg/l (ppm) Cl2(use DPD 1)
Extended Range: 0-10.0mg/l (ppm) Cl2(use DPD XF)
Colour change: Colourless - Purple/Red
1Rinse test cuvette with sample leaving
two or three drops in the tube.
2Add one DPD 1 or DPD XF tablet, crush
tablet and then fill the test tube with
sample to the 10ml mark. Mix to dissolve
tablet fully and ensure no particles remain.
3Take photometer reading immediately.
The result may drift on standing.
4Retain test solution if the Total
Chlorine Follow-On Test is required.
Test 2 Chlorine-Total/5 or Chlorine-Total/10
Standard Range: 0-5.00mg/l (ppm) Cl2(use DPD 3)
Extended Range: 0-10.0mg/l (ppm) Cl2(use DPD XT)
Colour change: Purple/Red from Test 1
increases in intensity
Carry out this test on the solution
remaining from the Free-Chlorine/5 test.
1If any shock treatment chemicals have
been added to the pool, add one DPD
Oxystop tablet, crush and mix to dissolve.
Stand for one minute before proceeding.
This will prevent a false response caused
by the shock treatment chemicals.
2Add one DPD 3 or DPD XT
tablet, crush and mix to dissolve.
3 Stand for two minutes
to allow full colour development.
4Take photometer reading
after two minutes have elapsed.
Note: To obtain Combined Chlorine
residual subtract Free Chlorine result
from Total Chlorine result:
Combined Chlorine =
Total Chlorine - Free Chlorine
Test Methods
7.0 Test Methods
Test Test Notes
No. Name
0Transmittance Select wavelength manually
using up/down arrows
1Chlorine-Free Select range from
the System Mode
2Chlorine-Total Select range from
the System Mode
3Bromine-Total
4Ozone
5PHMB
6pH-Phenol Red
7Total Alkalinity
8Calcium Hardness
9Cyanuric Acid
10 Iron/1
11 Copper Free/5
12 Copper-Total/5 Available directly, also as a
Follow-On Test from Test 11
13 Salt/10,000
14 Sulphate
15 Chloride
16 Total Hardness
17 Aluminium
18 Nitrate
19 Ammonium
20 Phosphate/4
21 Manganese HR
22 Chlorine/250
23 Hydro. Perox./100
31 Chlorine-Free/5
32 Monochloramine Available as a Follow-On
Test from Test 31 only
33 Dichloramine Available as a Follow-On
Test from Test 32 only
34 Calc. Hard. Salt Use when testing Calcium
Hardness in a salt pool
35 Urea Use specifically in China only
77 Water Balance Choose Palintest or Langelier
from the System Mode

17
Test Methods
Test 3 Bromine
Range: 0-10.0mg/l (ppm) Br2
Colour change: Colourless - Purple/Red
1Rinse test cuvette with sample leaving
two to three drops in the tube.
2Add one DPD 1 tablet, crush tablet and then fill
with sample to the 10ml mark. Mix to dissolve
tablet fully and ensure no particles remain.
3Take photometer reading immediately.
Result may drift on standing.
Test 4 Ozone
Range: 0-2.00mg/l (ppm) O3
Colour change: Colourless - Purple/Red
1Rinse test cuvette with sample leaving
two to three drops in the tube.
2Add one DPD 4 tablet, crush tablet and then fill
with sample to the 10ml mark. Mix to dissolve
tablet fully and ensure no particles remain.
3Take photometer reading immediately.
Result may drift on standing.
Note: The ozone test also responds to chlorine
and bromine. Pools using ‘ozone with chlorine’
treatment systems, or other combined treatments
will produce a result at this stage representing the
ozone plus other treatment chemicals.To determine
ozone specifically requires an additional protocol
as follows:
Correction for Chlorine or Bromine
1Fill a test cuvette with sample to the 10ml
mark. Add one DPD Glycine tablet, crush
and mix to dissolve.
2Take a second clean test tube and add two to
three drops of solution from the first tube.Add
one DPD 4 tablet, crush and then make up to
the 10ml mark with the solution from Step 1.
Mix to dissolve tablet fully.
3Take Photometer reading immediately. The
DPD Glycine complexes ozone in the sample
and the result displayed equates to chlorine
or bromine present in the sample only.
4Subtract the result obtained in Step 3 from
the initial result to determine the ozone
concentration specifically.
Test 5 PHMB
(Polybiguanide Based Biocides)
Range: 0-100mg/l (ppm) as biocide
Colour change: Yellow - Green - Blue
PHMB is the generic name for various
polybiguanide-based swimming pool biocide
treatment chemicals. These biocides are normally
sold under branded names such as Baquacil*
(Lonza), Softswim* (Biolab), Revacil* (Mareva)
and Nicosil* (NICO Norge).
Commercial products normally contain 20%
active PHMB.This test has been calibrated for the
management of pools using commercial products
of this defined strength. A factor will need to be
applied if products of a different strength are
being used. (*AII trademarks acknowledged).
1Fill test cuvette with sample to the 10ml mark.
2Add one PHMB tablet, crush
and mix to dissolve completely.
3Take photometer reading immediately.
Test 6 pH-Phenol Red
Range: pH 6.5-8.5
Colour change: Yellow - Red
1Fill test cuvette with sample to the 10ml mark.
2Add one Phenol Red tablet, crush
and mix to dissolve completely.
3Take photometer reading.
Test 7 Total Alkalinity
Range: 0-500mg/l (ppm) CaCO3
Colour change: Yellow - Green - Blue
1Fill test cuvette with sample to the 10ml mark.
2Add one Alkaphot™ tablet, crush
thoroughly and mix. Ensure all particles
have dissolved completely.
3Allow to stand for one minute.
4Take photometer reading.
Note: If a thin yellow layer is observed at the
bottom of the tube, the cuvette should be
thoroughly remixed before measurement.
7

18
Test Methods
Test 8 Calcium Hardness
Range: 0-500mg/l (ppm) CaCO3
Colour change: Violet - Orange
1Fill test cuvette with sample to the 10ml mark.
2Add one Calcicol No 1 tablet,
crush and mix to dissolve.
3Add one Calcicol No 2 tablet,
crush and mix to dissolve.
4 Stand for two minutes.
5Take photometer reading.
Note: this method is calibrated for standard
pools. For saltwater/seawater pools, please
use Test 34 Calc.Hard.Salt.
Test 9 Cyanuric Acid
Range: 0-200mg/l (ppm) CNA
Colour change: Clear - Cloudy
(turbidimetric method)
Note: Cyanuric acid is also commonly referred
to as ‘Chlorine Stabiliser’ or ‘Pool Conditioner’.
1Fill test cuvette with sample to the 10ml mark.
2Add one Cyanuric Acid tablet. DO NOT
CRUSH. Allow to disintegrate for at
least two minutes. A cloudy solution
indicates the presence of cyanuric acid.
3Crush any remaining undissolved tablet,
mix fully and take photometer reading.
Test 10 Iron/1
Range: 0-1.00mg/l (ppm) Fe
Colour change: Colourless - Pink
1Fill test cuvette with sample to the 10ml mark.
2Add one Iron LR tablet,
crush and mix to dissolve.
3 Stand for one minute.
4Take photometer reading.
Test 11 Copper-Free/5
Range: 0-5.00mg/l (ppm) Cu
Colour change: Colourless - Purple
1Fill test cuvette with sample to the 10ml mark.
2Add one Coppercol No 1 tablet,
crush and mix to dissolve.
3Take photometer reading.
Test 12 Copper-Total/5
Range: 0-5.00mg/l (ppm) Cu
Colour change: Colourless - Purple
1Fill test cuvette with sample to the 10ml mark.
2Add one Coppercol No 1 tablet and one
Coppercol No 2 tablet, crush and mix to dissolve.
3Take photometer reading.
Note: The Copper-Total/5 is also available as a
Follow-On Test from Test 11 Copper-Free/5
Test 13 Salt/10,000
Range: 0-10,000mg/l (ppm) NaCl
Colour change: Clear - Cloudy
(turbidimetric method)
1Take a clean dilution tube (PT 512).
Using the Measuring Syringe (PT 361) add
0.5ml of pool water. Fill to the 100ml mark
with deionised water, cap and mix.
2Fill test tube to the 10ml mark
with diluted solution.
3Add one Acidifying CD tablet,
crush and mix to dissolve.
4Add one Chloridol tablet, and allow to
disintegrate for at least two minutes. A
cloudy solution indicates the presence of salt.
5Crush any remaining undissolved tablet,
mix and take photometer reading.
Test 14 Sulphate
Range: 0-200mg/l (ppm) SO4
Colour change: Clear - Cloudy
(turbidimetric method)
1Fill test tube with sample to the 10ml mark.
2Add one Sulphate tablet, crush and mix
to dissolve. A cloudy solution indicates
the presence of sulphate.
3 Stand for five minutes then mix again.
4Take photometer reading.
7

19
Test Methods
Test 15 Chloride
Range: 0-500mg/l (ppm) NaCl
Colour change: Clear - Cloudy
(turbidimetric method)
1Take a clean test cuvette. Using the Measuring
Syringe (PT 361) add 1ml of pool water. Fill test
tube to the 10ml mark with deionised water.
2Add one Acidifying CD tablet,
crush and mix to dissolve.
3Add one Chloridol tablet and allow to
disintegrate for at least two minutes. A
cloudy solution indicates the presence of chloride.
4Crush any remaining undissolved tablet,
mix and then take photometer reading.
Test 16 Total Hardness
Range: 0-500mg/l (ppm) CaCO3
Colour change: Pale Purple - Purple
1Fill test tube with sample to the 10ml mark.
2Add one Hardicol No 1 tablet,
crush and mix to dissolve.
3Add one Hardicol No 2 tablet, crush
and mix. Ensure all particles are dissolved.
4 Stand for two minutes.
5Take photometer reading.
Test 17 Aluminium
Range: 0-0.50mg/l (ppm) Al
Colour change: Yellow - Pink
1Fill test cuvette with sample to the 10ml mark.
2Add one Aluminium No 1 tablet,
crush and mix to dissolve.
3Add one Aluminium No 2 tablet,
crush and mix fully to dissolve.
4 Stand for five minutes.
5Take photometer reading.
Test 18 Nitrate
Range: 0-100mg/l (ppm) No3
Colour change: Colourless - Red
1Take a clean Nitratest Tube (PT 526). Using
the Measuring Syringe (PT 361) add 1ml of
sample. Fill the Nitratest Tube to the 20ml
mark with deionised water.
2Add one level spoonful of Nitratest Powder and
one Nitratest tablet. Do not crush the tablet.
Replace screw cap and shake tube well for exactly
one minute then allow contents to settle.
3Then, either:
Invert tube gently 2 or 3 times and then allow
to stand for at least two minutes to ensure
complete settlement. Remove screw cap and
wipe around top with a clean tissue. Decant
clear solution into test cuvette, filling to the
10ml mark.
or
Using the Palintest Filtration Set (PT 600) filter
a portion of the solution through a GF/B filter
paper into a test cuvette filling to the 10ml mark.
4Add one Nitricol tablet,
crush and mix to dissolve.
5 Stand for 10 minutes.
6Take photometer reading.
Test 19 Ammonium
Range: 0-1.00mg/l (ppm) N
Colour change: Yellow - Green
1Fill test cuvette with sample to the 10ml mark.
2Add one Ammonia No 1 tablet and one
Ammonia No 2 tablet, crush and mix to dissolve.
3 Stand for 10 minutes.
4Take photometer reading.
7

20
Test Methods
Test 20 Phosphate/4
Range: 0-4.00mg/l (ppm) PO4
Colour change: Colourless - Blue
1Fill test cuvette with sample to the 10ml mark.
2Add one Phosphate No 1 tablet,
crush and mix to dissolve.
3Add one Phosphate No 2 tablet,
crush and mix to dissolve.
4 Stand for 10 minutes.
5Take photometer reading.
Test 21 Manganese HR
Range: 0-5.0mg/l (ppm) Mn
Colour change: Colourless - Orange
1Fill test cuvette with sample to the 10ml mark.
2Add one Manganese HR No 1 tablet,
crush and mix to dissolve.
3Add one Manganese HR No 2 tablet,
crush and mix to dissolve.
4 Stand for exactly 5 minutes.
5Take photometer reading.
Test 22 Chlorine/250
Range: 0-250mg/l (ppm) Cl2
Colour change: Colourless - Brown
1Fill test cuvette with sample to the 10ml mark.
2Add one Acidifying GP tablet and one
Chlorine HR tablet, crush and mix to dissolve.
Allow any undissolved particles to settle.
3Take photometer reading.
Test 23 Hydrogen Peroxide/100
Range: 0-100mg/l (ppm) H2O2
Colour change: Colourless - Brown
1Fill test cuvette with sample to the 10ml mark.
2Add one Acidifying PT tablet and one
Hydrogen Peroxide HR tablet, crush
and mix to dissolve.
3Take photometer reading.
Note: use this test for checking hydrogen
peroxide levels in pools treated with PHMB.
Test 31/32/33 Chlorine-Free/5,
Monochloramine and Dichloramine
Range: 0-5.00mg/l (ppm) Cl2
Colour change: Colourless - purple/red (Free
Chlorine), increasing intensity
with Follow-On tests.
1Rinse test cuvette with sample
leaving a few drops in the tube.
2Add one DPD 1 tablet, crush tablet and then
fill the test tube with sample to the 10ml mark.
Mix to dissolve tablet fully and ensure no
particles remain.
3 Take photometer reading immediately.
The result may drift on standing.
4Retain test solution and select ‘Follow-On’
for the Test 32 Dichloramine.
5
Add one DPD 2 tablet, crush and mix to dissolve.
6 Take the photometer reading immediately.
The result displayed is the monochloramine
concentration as mg/l (ppm) Cl2.
7Retain the test solution and select ‘Follow-On’
for the Test 33 Dichloramine.
8Add one DPD 3 tablet, crush and mix
to dissolve. Stand for two minutes to
allow full colour development.
9Take the photometer reading. The photometer
displays the dichloramine concentration
as mg/l (ppm) Cl2.
Test 34 Calcium Hardness
(Saltwater Pool Calibration)
Range: 0-500mg/l (ppm)
Colour change: Violet - Orange
1Fill test cuvette with sample to the 10ml mark.
2Add one Calcicol No 1 tablet,
crush and mix to dissolve.
3Add one Calcicol No 2 tablet,
crush and mix to dissolve.
4 Stand for two minutes.
5Take photometer reading.
7