I'm running a chlorine experiment for our community patient setup so thought I would post the whole thing here for comment and scrutiny.
We're using a single patient RO. The DWA one is what we have in around 50% of our homes, the other 50% use the Aqua Uno which is mechanically identical.
We'll be taking the measurments with our Chlorosense meter. Our Chlorosense test strips are stored in the fridge and the calibration of the meter is to be verified before every test using the calibration standards supplied by Palintest.
The tap water is straight from the main and after a quick measurement this morning we recorded an incoming chlorine level of 0.8ppm.
This water is going to feed through a 10 micron particulate filter which is connected in series to another filter bowl which will house our current carbon filter - the Pentek C1.
To ensure a realistic contact time between carbon and water we are going to feed the RO permeate through a regulator set to give a flow of approximately 500mls/min. This should simulate an average draw from a machine. The drain from the RO will obviously be acting as normal with a flow of approx 2000mls/min.
We will measure daily to see how the carbon begins to exhaust making note of how many running hours/litres have occurred.
Measurements will all be taken at least 1 hour after starting the RO every day to ensure accurate contact time.
We will plot 3 axis on our chlorine graph; incoming water, post carbon and just out of curiosity, post RO.
If you have any comments as the experiment unfolds then please feel free to post within the thread.