What we make
Pool Test Lab is an independent collection of calculators and practical guides for residential pool owners. The tools connect measured readings with clearly stated assumptions. The guides explain the decisions that a number alone cannot make.
The name describes our focus on checking water-care calculations. It does not mean we operate an accredited testing laboratory, have inspected your pool or have personally tested every piece of equipment mentioned in a guide.
How we check calculations
- Identify the model. A geometric formula, a product-rate estimate and a treatment-reference table are different kinds of evidence.
- Document the assumptions. Water volume, product concentration, units, treatment method and chart boundaries remain visible.
- Use a shared implementation. Calculators and generated numerical tables read the same calculation layer.
- Test independent examples. Automated checks cover units, boundary conditions, known examples and important cross-page relationships.
- Keep uncertainty visible. Where a source or rate cannot be verified, we withhold the automatic dose rather than fill the gap with an unsupported number.
Sources are linked on each calculator page. Our September 26, 2026 review distinguished the published TFP FC/CYA tables from approximate ratio formulas and separated working targets from minimums. It also identified reasons not to provide a universal breakpoint dose from CC alone.
What “independent” means here
We choose the structure and conclusions of our guides. A manufacturer source can help establish a specification, but it is not independent proof of comparative performance. A user report can describe an experience, but it is not the same as a controlled test.
The launch equipment guide is a selection framework. It contains no hands-on rankings, invented scores, product-price claims or purchased endorsements. Any future review will state what was actually evaluated and what came from published specifications.
The limits of a calculator
A tool cannot collect a water sample, identify every contaminant or inspect a pool’s finish and plumbing. Our results are estimates and planning references, not certification that a pool is safe to use. Product labels, equipment-specific instructions and applicable local guidance take priority.
Check the full method before a treatment. When an input is uncertain or the measured response is unexpected, investigate before repeating an addition. For installation-specific or urgent issues, work with an appropriate professional.
Start with the useful part
Find your pool volume, review your water readings, or read the robotic cleaner guide. Our editorial disclosure and privacy page explain the rest.