Use these calculators to turn measured field inputs into a narrower equipment comparison. Each tool shows the assumptions behind its result and stops where a current product document or an on-site measurement must take over.
Equipment decision tools
DI or RO/DI system selector
Enter source-water TDS, expected daily gallons, workdays and a documented DI vessel size. The selector estimates the stated resin capacity and shows when a multi-stage RO/DI comparison deserves attention.
What a result can prove
A result can make the arithmetic visible, identify a comparison path and list the next specification to verify. It cannot approve a particular model, predict exact resin life, replace output-water testing or resolve pressure, membrane, hose and pump limits that belong to the exact system.
Inputs are processed in the browser. The tools do not save measurements or turn an estimate into a product recommendation.