YSI BOD Analyst Pro - Manual (Page 57)

YSI BOD Analyst Pro ® User Manual 57
In this example, one Influent bottle has been read. There are three total in the Batch. There tends
to be less experimental error if you measure the dilution with the greatest sample volume, in this
case Bottle #111,
In order to perform this operation you must enter the bottle numbers of each sample that precedes
the sample that will be read. Therefore you would enter the B# for 109, press SKIP, then enter B#
for 110, press SKIP, and then B#11 where you would proceed to CONFIRM the reading of this
bottle.
After you complete Initial readings the Initial DOs that were not read will be derived and appear
in the Batch table. In this example the bottles with 8 and 10 ml of sample will be derived, and any
others under the Effluent if there were more than 3 total.
You may read more than one bottle in any Sample and the derivation still works. In deriving
Initial DOs the program considers all of the constituents of a bottle. For example, the Sample
Influent has only two constituents, the undiluted sample collected from the plant and dilution
water.
6.5 CORRECTING MISTAKES
If you notice mistakes or question data after you complete Initial DOs use the Bench Sheet to
make corrections. You can do this for most data by clicking on the field and editing the data. You
can change Bottle Number, Sample Volume, Seed Volume and Initial DO providing that the
reading is still the same day that Initials were read.
You can also retake all Initial readings or the reading of a specified single bottle. Select Read /
Retake Initials
and choose one
of the following,
All bottles or
This Bottle,
from the menu.
All bottles will
allow you to
start at the
beginning of the
batch and retake
each bottle.
This Bottle will
allow you to
read only the
selected bottle.
In the example
Influent sample