How do I prepare my water/wastewater sample for PeCOD Analysis using a homogenizer?

The following steps will outline how to correctly homogenize a water/wastewater sample for analysis with the PeCOD.

1. Homogenize the raw sample for 2 minutes. Ensure you are using at least 50mL or more of sample.
2. Prepare the sample with electrolyte in the range being used. Click here for the correct sample-to-electrolyte ratio for each colour range.
   –  For example, if you are using yellow range, take 2mL of sample plus 18mL of electrolyte.
   –  If dilution is required, prepare the dilution first with the homogenized sample, then prepare with electrolyte.
3. Homogenize the mixture of sample and electrolyte for 1 minute.
4. Place the PeCOD intake tube (Port A) into the sample and press run the analysis.
5. Rinse the homogenizer in deionized water, turn on for 30s while in DI water.
6. Spray down homogenizer with DI water using a laboratory bottle with nozzle (common lab squeeze bottles).