Non-invasive water hardness test strip Nespresso
2018-3-1 · Monitoring. Done by testing water hardness post-softener and observing pressure gauges pre- and post-softener. A hardness test using an ethylene-diaminetetracetic acid (EDTA) titration test, or dip and read test strips on the effluent softened water should be done at least once, at the end of the day and recorded (AAMI, 2014d).
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