Users Manual

BOD MEASUREMENT

• The type of the Sample: Sample or Seed.

• Bottle Volume: the total volume of the BOD bottle.

Range: 0.1 to 300.0 mL.

• Sample Volume: the volume of sample in the BOD bottle.

Range: 0.1 to 300.0 mL (for a seed sample this value is 0.0 mL and cannot be set).

• Seed Volume: the volume of seed in the BOD bottle.

Range: 0.0 to 300.0 mL.

Press Prev/Next to select a different parameter on the screen.

Press / keys to modify the selected parameter’s value.

Press Save to save the BOD parameters and the initial DO, temperature, pressure and salinity values

for the specified bottle. If a bottle with the same ID already exists, the meter will ask for replacement

confirmation.

Press Replace to replace the existing record, or ESC to return to the previous screen without replacing.

When a new record is saved the meter will display a message indicating the remaining free BOD initial

data space in %.

Repeat procedure with additional samples: Rinse off probe between samples. Place the probe into the

BOD sample and allow the measurement to stabilize. The sample should be well mixed. Follow all

standard operating procedures.

Press Add new and complete BOD Parameters screen (see above). Press Save log initial data from

this sample.

Prepare all sample bottles for incubation.

Remove probe from sample and fill and cover to prepare bottle for incubation.

Rinse probe off with purified water. If desired, move probe to next sample. Press and repeat this

procedure on additional samples and Seed samples.

At the conclusion of Day 0 the probe should be cleaned and stored and all samples should be incubated

following Operational Procedures.

Day 5 (Final DO)

Remove samples and Seed samples from the incubator for analysis.

Press MODE to display BOD. Press CAL then DO to calibrate the DO probe.