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The 0.2 micron filter is located inside the red ring. Prior to filtration, this filter is clear. After filtration, the filter has a greenish tan color – evidence of biomass. Aboard the Nathaniel B. Palmer.

Credit to Read: 
Photo by Cara Pekarcik (PolarTREC 2016), Courtesy of ARCUS
Photographer: Cara Pekarcik
Download: 
Image icon Download Pekarcik_P9220012.jpg (4.74 MB)
Category: 
Year: 
2016
Program: 
PolarTREC
Region: 
Southern Ocean
Topic: 
File Information
Focal Length: 
3.7mm
File Size: 
4968593
Computed Mime: 
image/jpeg
Max Aperture: 
f/3.5
Height: 
2592
Width: 
4608
Make: 
OLYMPUS IMAGING CORP.
Model: 
TG-860
Exposure Time: 
1/30s
ISO: 
250

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