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82-83 WATER TESTING:SPN Master pages 15/1/09 16:36 Page 2
spnfeature
Pool water testing
products urged to
increase accuracy
T
he move to more sophisticated treatment pools, ceremonial pools, spas, Another factor to keep in mind if
and accurate swimming pool test whirlpools and water parks. Evaluating comparing test results is the precision
kits should have one target- to these facilities for environmental health factor. Most liquid/tablet kits allow for very
provide test results that would compliance includes checking the precise readings for certain parameters.
normally be associated with laboratory circulation, filtration and water treatment Total alkalinity and hardness, for example,
analysis undertaken by trained technicians. records, the ancillary safety equipment, are measured in increments of 10 ppm. This
The Health and Safety Executive says diving boards, ladders and most allows the user to determine within 10 ppm
some test kits and strips may not be able importantly, the quality of the water. what the actual result is. Other test kits and
to offer the precision and accuracy which is The Health and Safety Executive test strips may not offer such precision. spn
needed in the future. The accuracy range maintains its control of swimming pools
of 10ppm to 50ppm needs to move to the through HSG179 and has asked for an
higher end it says. increase in the number of times Consumer
It is known that larger pool managers Protection Officers test the bathing water
and pool owners are struggling to quality at public swimming pools and
balance out the demands of trying to jacuzzis to make sure they are kept to a
guarantee infection free water with safe and satisfactory standard.
criticism from swimmers that too much The spokesman added: “While several
chlorine is being used. swimming pool test kits on the market
An autumn 2008 local authority report today do a very good job of testing the
only succeeded on putting more water parameters required by the sanitary
responsibility on pool owners when it codes and regulations of various
urged greater care to avoid infections jurisdictions, some are easier to read than
bringing bad publicity, closing pools or others; some are easier to manipulate,
even sparking off legal action. some are chemically more stable, and for
It argued regular and more accurate some, it is easier to get replacement parts
testing was necessary. and reagents. The prices of the kits vary
An HSE spokesman told Swimming Pool according to the number of parameters
News: ”Pool testing to ensure proper they can test and whether the readings are
sanitation is absolutely vital in minimizing done electronically or depend on simple
disease risk. All water activity venues must visual detection. Study the marketplace for
be tested – not only public wading and the best selection, and remember to have
swimming pools, but also hot tubs, medical fun and stay dry.”
“WHILE SEVERAL SWIMMING POOL TEST KITS ON THE
MARKET TODAY DO A VERY GOOD JOB OF TESTING THE
WATER PARAMETERS REQUIRED BY THE SANITARY CODES
AND REGULATIONS OF VARIOUS JURISDICTIONS, SOME
ARE EASIER TO READ THAN OTHERS; SOME ARE EASIER
TO MANIPULATE, SOME ARE CHEMICALLY MORE STABLE,
AND FOR SOME, IT IS EASIER TO GET REPLACEMENT
PARTS AND REAGENTS”
82 swimming pool news FEBRUARY 09 Digital edition available at www.swimmingpoolnews.co.uk
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