msa190-10
2010-12
page 8
Compliance
The DPD method is a published standard method in the UK, the European Community, USA, Australia and in many other countries. The Palintest DPD
free and total chlorine tests are approved by the USEPA as accepted versions of the Standard Method 4500-C1-G (0 – 5 mg/L).
The Palintest photometer series has been independently tested and has earned the European CE Mark of Compliance for electro-magnetic compatibility
(EMC).
Sample Dilution and Collection
When the test result is outside the concentration range of the test, the photometer will display the '>' symbol. In such cases it is necessary to dilute the
pool water and repeat the test. A Palintest dilution tube (PT 512) is available to dilute samples accurately.
If the result is close to the top of the scale ( e.g. chlorine above 4 mg/L on the Chlorine-Free/5 or Chlorine-Total/5 range, calcium hardness above 300
mg/L and cyanuric acid above 150 mg/L) and a more accurate result is required, a dilution may be used to increase the sensitivity of the test.
The following points should be observed when taking water samples from th e pool. Take pool water samples from below the water surface. Collect in a
clean plastic bottle and fill to the neck so as to avoid unnecessary airspace.
The free chlorine or bromine may drop during sample storage. Other parameters such as pH and alkalin ity can also change. Samples should therefore
be tested as soon as possible after sample collection.
6 REORDER CODES and ACCESSORIES
Code
Reference
Designation
190 821
DPD1 x250
Pack of 250 tablets for testing acc. To DPD1
190 823
DPD3 x250
Pack of 250 tablets for testing acc. To DPD3
190 824
isocyanuric x250
Pack of 250 tablets for testing isocyanuric acid
