Alexander Szabo and Oscar Engle - Svenskt Vatten
Alexander Szabo and Oscar Engle - Svenskt Vatten
Alexander Szabo and Oscar Engle - Svenskt Vatten
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colorimetric<br />
Figure 7.1: Hach DRB 200 Digestor for reagents (left) <strong>and</strong> Hach DR/5000 for<br />
determination (right) (<strong>Szabo</strong> & <strong>Engle</strong>, 2010).<br />
If the reading showed unexpected low or high values for a specific sample, a new analysis on that<br />
sample was done the following day. If the new analysis gave the same result, the average of these<br />
values was used. If another value, that was in the same range as the other samples from that<br />
measuring event, was measured, that value was used instead.<br />
BOD5<br />
Influent samples from the 5-6 November were successfully analyzed by the incubator method.<br />
The effluent samples from that day were analyzed by the manual method due to lack of available<br />
space in the incubator. Samples from the other testing events failed due to technical problems, or<br />
are not used as they are considered unreliable.<br />
Incubator method<br />
<br />
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