eDNA Sample Collection, Filtration and Preservation | Maxxam Analytics Maxxam Analytics

eDNA Sample Collection, Filtration and Preservation

The ideal location and timing of eDNA sampling, along with the number of samples to collect will depend on the target species and specific objectives of the study.

A properly designed survey is required to generate meaningful eDNA results. Expert consultation is advised.

Water samples should be filtered and preserved with either silica desiccant beads or molecular grade ethanol (95 -100 % pure) within 24 hours of collection (and prior to submission to the lab). Note that ethanol is subject to transportation of dangerous goods regulations and may require a license to purchase. Maxxam recommends the use of silica desiccant beads.

Once preserved, the eDNA should be viable for 6 months, longer if it is stored in a non-self-defrosting freezer at -20ºC or colder. Lab extracted eDNA (in a buffered solution) will remain viable for years.

Resources for further information on eDNA sampling, filtration and preservation:

eDNA Sample Collection, Filtration and Preservation


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Donna Garbutt, M.B.A. Chief Executive Officer Maxxam is the Canadian market leader in analytical services and solutions to the energy, environmental, food and DNA industries and a member of the Bureau Veritas Group of companies – a world leader in testing, inspection and certification services. We support critical decisions made by our customers through the application of rigorous science and the knowledge and expertise of our over 2200 employees. Our annual Corporate Responsibility Report outlines our efforts to continually improve our business performance and practices. Its publication is an industry first and an integral part of our commitment to success with responsibility. LinkedIn
Maxxam Analytics Maxxam is the Canadian market leader in analytical services and solutions to the energy, environmental, food and DNA industries and a member of the Bureau Veritas Group of companies – a world leader in testing, inspection and certification services. We support critical decisions made by our customers through the application of rigorous science and the knowledge and expertise of our over 2200 employees. Our annual Corporate Responsibility Report outlines our efforts to continually improve our business performance and practices. Its publication is an industry first and an integral part of our commitment to success with responsibility.
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