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Supporting authority
Analytical method or chemistry authority
A Primer on Water Quality
U.S. Geological Survey
This is not a biological evidence record. It can govern a measurement, regulation, professional practice, maintained reference or named product instruction. It cannot silently become a Neocaridina experiment or animal-outcome threshold.
Permitted use
General water-quality context, including evaporation and dissolved-material concentration.
Boundary
It does not prescribe an aquarium top-off schedule, water-change percentage or shrimp parameter range.
- Role
- Analytical method or chemistry authority
- Reviewed
- 2026-08-12
- Linked guides
- 2
Where this authority is used
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Submit a stable replacement, update or narrower interpretation. A changed authority does not automatically change a biological conclusion; affected guide claims still receive editorial review.