From: ouasami@do-not-send.com   
      
   On 14/11/18 12:31, Libor Striz wrote:   
   > Oumati Asami  Wrote in message:   
   >> On 12/11/18 07:33, Libor Striz wrote:>   
   >   
   >> I estimate the volume of the pool to be 68000 liters.   
   >   
   >>> The target chlorine content is AFAIK about 5 ppm, i.e. 5 mg/L I,>   for   
   above  it would be 180 g Cl/ basin.( Doses is higher as some>   chlorine is   
   consumed and some escapes).   
   >   
   >> Is the 5 mg the weight of the chloride (Cl-), chlorine (Cl2) or   
   hypochlorite (OCl-)?   
   >   
   >   chlorine, or chlorine equivalent of hypochlorite. There are   
   >   chlorine content measurement kits,   
   > using chlorine reaction developing a yellow dye, comparing with   
   >   colour charts.   
   >   
      
   The formula weight of the three species is quite different. That's why I   
   asked which one was it. Anyway, I have chlorine test paper. It's time to   
   use it.   
      
   Thank you very much for the info you provided.   
      
   >> I wonder how you measure dissolved organic carbon.   
   >   
   > Not possible without  a lab equipment.   
   >   
   > Procedurally, water is striped out of dissolved CO2 and carbonates   
   >   by  addition  of hydrochloric acid and by purging with CO2 free   
   >   nitrogen.   
   > Then, water sample is injected to a furnace with a NiO catalyst,   
   >   where organic matter is oxidised to CO2.   
   > Current equipment usually uses IR absorption measurement of CO2,   
   > být the one we used in early 90s   
   > used reduction CO2 by H2 to CH4   
   > and measurement of methane content by flame ionisation detector.   
   >   
      
   Looks quite tedious. Glad I don't have to do it.   
      
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