Page 87 - Catalogue Ocedis 2023 EN

Analysis
& Diagnosis
PHOTOMETRIC ACCESSORIES
Photometric Accessories 94 “Black” Photometer Tablets 94 Health Logbook 94 Scuba II Electronic Pool Tester 95 Waterproof Photometers 95 PM620 95 WATER ANALYSIS
Spin Touch – – Ocediciel 88–89 MelConnect 90 O’Assist in 91 O’Assist 91 O’Pilot 91 Family Pool Tests 92 Pool Tester 93 Various Tests 93 “Green” Rapid Cl/pH Tablets 93 Electronic Testers 93 Technical terms
ppm ppm or or or mg/l: 1 1 1 1 1 ppm ppm = 1 1 1 1 1 mg/l mg/l or or or 1 1 1 1 1 gr/m3 or or or 100 100 gr/100m3 pH pH pH (potential of hydrogen) : The pH pH pH is
measured with phenol red red tablets In a a a a a public pool the pH pH pH should be be set between 6
9 and 7 7 7 7 Free chlorine: This is
is
measured using using a a a a a a DPD
1 1 Tablet in in in in in in a a a a a a a a 10 ml water sample When using using stabilised chlorine chlorine chlorine the free chlorine chlorine chlorine level (also called available chlorine) must be kept above 2 mg/l Total chlorine: Add a a a a a a DPD
DPD
3 Tablet to to the the DPD
DPD
1 Test and wait two minutes to to take the the measurement Combined chlorine chlorine (chloramines):
The combined chlorine chlorine level level is
the chloramine chloramine level It is
the the difference between the the measured levels of total chlorine chlorine (DPD (DPD 1+3) and free chlorine chlorine (DPD 1) The regulations require a a a combined chlorine level of less than 0 6
mg/l Active chlorine: When using chlorine chlorine chlorine WITHOUT
stabiliser the the the active chlorine chlorine chlorine chlorine is
is
calculated
by taking the the the pH pH and and the the the free free chlorine chlorine chlorine level Example: with a a a a a a a a a pH pH of of of of 7 3 and and a a a a a a a a a free free chlorine chlorine chlorine level level Replenishment of of of of water:
of of 1 5 mg/l mg/l the active chlorine chlorine is
(approx ) 60 % i i e e e 0 9 mg/l mg/l The regulations require that the active chlorine level be be between 0 4 4 and 1 4 4 mg/l 1/20th of of the the pool pool volume each day or or 30 l/bather for pools in compliance with filtration Advice: 50 l/bather for optimal water quality 87
analysis diagnosis