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Hanna checker (nitrites)

The Hanna nitrite checker is a digital colorimeter that provides precise nitrite readings in ppm (parts per million) as NO₂⁻, commonly used for monitoring water quality in both freshwater and saltwater environments.
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Land acknowledgement

Open to Collaborate Notice:

Open to Collaborate Notice: Our institution is committed to the development of new modes of collaboration, engagement, and partnership with Indigenous peoples for the care and stewardship of past and future heritage collections. Learn more about Local Context notices.

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We gratefully acknowledge support from our funders. Support open access

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