Rest assured, pool- and spa-water tests are much less painful than you may . The DPD is the preferred of the two because it tests for free available chlorine -- the most powerful 'killing form' of chlorine. . Web Site Created by Master Image. This APSP Fact Sheet has been prepared from the best information available at the time of its . part of this maintenance schedule is regular water testing. . http://www.lamotte.com/images/pdf/techtips/waterlabtech.pdf; and 'Advanced Water. form or by any means, electronic, mechanical, photocopying, recording or otherwise, pool.' While these activities add great value to our lives, water can potentially be a source of danger. . Do not test your child's swimming ability by. auxiliaries, sixth form students training for a sports leaders award etc, . All levels are recorded in the water testing log which is kept in the pool entrance hall. Looking for a Free-form pool with raised wall, Browse our collection of pools, pool designs and more to see which is right for your home. Please contact a pool water specialist in your area for exact maintenance requirements . Test water balance, pH, Calcium Hardness and Total Alkalinity levels . View a swimming pool Inspiration Gallery featuring inground pools, above . Free-Form Pool with Water Feature #1 . Free-Form Infinity Pool with Hot Tub #3. Oct 2, 2017 - Testing and balancing your pool water should be done weekly or as Sanitizers come in different forms including stick, puck, granular or . The most common chemical used in the treatment of swimming pool water is chlorine. It not only . This is what we read when we test the pool for chlorine.