What can be done if the Nutrient Buffer Pillows do not appear to dissolve completely when added to the dilution water?
Dissolving Nutrient Buffer Pillows for BOD analysis
Make sure the dilution water is mixed thoroughly, by shaking if possible. If the nutrients still don´t completely dissolve, continue with the test as usual. The pillows contain more than enough nutrients to mix with the dilution water. Any extra will not interfere with the results of a Biochemical Oxygen Demand (BOD) measurement.