msa190-10
2010-12
page 2
1 GENERAL INFORMATION
Palintest instruments and reagents are renowned as being simple to use, whilst providing rapid and reliable results for the testing of water. Our
instruments are of the highest quality and fully waterproof. Palintest’s experience, built-up over the last 50 years, is the reason why our instruments and
reagents are used in laboratories, treatment plants, leisure f acilities and industrial premises throughout the world.
Our products are packaged carefully and the product should reach you in the state it left our factory; if this product has reached you in a state that is less
than satisfactory, please contact BAMO Mesures SAS.
This booklet describes the best way to use Palintest products, and provides instructions for the range of water tests that can be performed 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.
Kit Pooltest 3 content
Instrument layout
- Pooltest 3 instrument
- Instructions manual
- Crushing Rods
- Cleaning brush
- Test cells
- Reagents:
Chlorine (Free and Total)
pH (Phenol Red)
Cyanuric Acid
2 BACKGROUND INFORMATION
Introduction to Colorimetric Measurement.
Palintest tests are based on measuring the intensity of colours produced by Palintest reagents and using Palintest photometers to measure that intensity
of colour. This is colorimetry and can be defined as any technique used to evaluate an unknown colour in refere nce to known colours.
To avoid subjective measurement between test samples and colour standards, a colorimeter can be used for quantitative measurement of the amount of
coloured light absorbed by a sample (with reagents added) in reference to a untreated sample (blank).
White light is made up of many different wavelengths of light.
A colorimeter passes a white light beam through an optical filter which transmits only one particular band of wavelength of light to the photodetector
where it is measured.
The difference in the amount of coloured light transmitted by a colourless sample (blank) and the amount of coloured light transmitted by a coloured
sample is a measurement of the amount of coloured light absorbed by the sample.
The use of filters improves the sensitivity of this process and choice of
the correct optical filter (and, therefore, the correct wavelength) of light
is important.
It is interesting to note that the filter that gives the most sensitive
calibration for a test factor is the co mplementary colour of the test
sample.
For example, the chlorine test produces a pink colour proportional to
the chlorine concentration in the sample (the greater the chlorine
concentration, the darker the pink colour). In this case, a green filter
gives the greatest sensitivity as a pinkish-red solution absorbs mostly
green light.
Palintest photometers calculate and then display the test results
directly in milligrams per litre (mg/L) of the test factor, by comparing
the amount of absorbed light to the calibration data programmed into
the instrument.
Blue Solution
Red Filter
(450 - 500nm)
(625 – 635nm)
Photodetector
Wavelengths of blue light
Red light only passes
plus small quantities of red
through the filter. All
light pass through the
other light is absorbed.
solution.
