BOD, MDL Standard

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

This sample is packaged as a 20 mL concentrate. The solvent for this sample is water. The sample has been autoclaved for preservation.
To prepare solution, partially fill a 1-L volumetric flask with reagent-grade water.Open ampule MDL-003 (be careful to avoid cuts on glass) and transfer 10 mL from the ampule into the flask. Fill the volumetric flask to volume with reagent-grade water and mix well. The sample is now ready for immediate analysis.
NOTES: For proper oxygen depletion of BOD, the sample should be tested in a dilution series. Use a natural surface water or diluted domestic sewage for seeded dilution water and avoid entrainment of air. Be sure to etermine the “blank” BOD of your seeded dilution water so that the proper seed correction can be made.

Values of analytes vary lot to lot. Some lots may not contain all analytes.