COAST ROAD Precision AQ Serviced

13 June 2018
<p>Service with Colin Craggs from Air monitors.</p> <p>Zero'd and filters changed.</p> <p>On the NO zero flow, the Pink scrubber had been incorrectly installed : the pink (permanganate scrubber to convert NO -&gt; NO2 must be first in the air flow before the charcoal (NO2 scrubber). This may have affected previous zero-ing. This has been corrected</p>