Keeping cool: Genetic Resources Collection makes its move

April 4, 2019
Cathy Morris

Sharon Birks, Burke Museum Genetic Resources Collection Manager, stands in front of two of the freezers containing thousands of tissue samples in their new home in the new Burke Museum.
Photo: Cathy Morris/Burke Museum

Sharon Birks stands on the loading dock recording video with her cell phone as the first of five freezers is rolled towards the open back of a box truck waiting outside the Burke Museum. It’s a rainy January afternoon and Sharon, Genetic Resources Collection Manager at the Burke Museum, is visibly nervous as the first 1,000 lb freezer is rolled onto the metal truck gate.

She is right to be nervous. The freezers contain more than 80,000 frozen tissue samples from wild animals—mostly birds, mammals, reptiles, and amphibians—making it an archive of life on earth and one of the largest collections of its kind in the world.

The frozen tissue samples are kept in boxes in ultracold freezers set to -80 degrees Celsius.
Photo: Cathy Morris/Burke Museum

The collection is constantly growing. Tissue samples are added to the Burke collection by Burke curators, staff, students at the University of Washington, federal agencies, and other museums. While most samples are collected from deceased animals that are part of the permanent Zoology collections, some come from living animals like the wolverine population in the North Cascades and provide incredible insights at various intervals of the animal’s life.

Each year, nearly 2,000 tissue sub-samples are sent from the Burke Museum to researchers studying questions related to evolution, human health and wildlife conservation management.

On this day the Genetic Resources Collection is moving a mere 480 feet from the former Burke Museum facility to the new Burke Museum facility recently erected next door. The New Burke offers something particularly special for Sharon and the rest of the Genetic Resources team: peace of mind.

Packed with ice
To be safely preserved, each sample is kept in a small plastic vial, then up to 81 vials are placed in a 5x5” box in racks inside an ultracold freezer kept at a chilly -80 degrees Celsius. Each freezer can hold more than 25,000 samples at full capacity. If the samples get too warm, their valuable insights are lost forever.

New Genetic Resources Collection freezers were added in 2015, but the old Burke Museum facility still lacked adequate air conditioning and emergency power during outages.
Photo: Cathy Morris/Burke Museum

The poor condition of the Burke’s former facility threatened this invaluable resource. Without adequate air conditioning, the hard-working freezers could overheat, and lack of emergency power during outages or natural disasters meant that one of the world’s largest genetic tissue collections could still be lost in just 48 hours.

To prepare for the move, Sharon carefully packed each freezer with dry ice to alleviate the samples’ fluctuation in temperature before powering off the machine and unplugging it from the wall.

That’s when the clock started ticking and the move team jumped into action. The freezers would need to be plugged back in within an hour to avoid a significant dip in temperature, keeping the samples below -60 degrees Celsius.

The first freezer is raised into the truck to move into the new Burke Museum (background).
Photo: Cathy Morris/Burke Museum

ArtTech, the Burke’s contracted mover, removed the doors to several rooms to clear a path to the freight elevator and rolled the freezers one at a time to the loading dock before transferring them into the truck, thankfully without any issues.

New peace of mind
Once inside the new Burke Museum, the freezers were taken upstairs to the biology wing with all new collections spaces and labs—including one dedicated to processing samples for tissue loans—when the new museum opens to the public this fall. And the New Burke has backup power and climate control!

Sharon Birks and curatorial assistant Kevin Epperly watch as the internal temperature reading turns on as the first freezer is plugged in after the move.
Photo: Cathy Morris/Burke Museum

Sharon plugged the first freezer into the wall and the gentle hum of the motor could be heard. She and lab manager Kevin Epperly immediately glanced toward the internal temperature readout at the front of the freezer: -74 degrees Celsius. Success!

Less than thirty minutes later all of the freezers were plugged in and the tissue samples were cooling back to -80 degrees Celsius safe in their new home where they’ll be accessible—with room to grow—for generations to come.

Sharon Birks smiles in relief as the first two freezers are up and running in their new home with climate control and emergency backup power.
Photo: Cathy Morris/Burke Museum

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