How often does the Sutro test? April 30, 2020 03:45 Updated The Sutro tests three times per day. Related articles Why does the Sutro Test Cartridge rattle when I shake it? How long does the Sutro Test Cartridge last? What chemical parameters does Sutro test for? What's inside the Sutro Test Cartridge? How does the Sutro take a reading? Comments 0 comments Please sign in to leave a comment.
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