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RO purifier, water softener and filtration systems by RK Smart Water Tech
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Practical notes on keeping your water clean.

Straightforward guidance on choosing, running and maintaining purifiers and softeners — written by our technicians.

RO Purifiers

RO vs UV vs UF: which purifier does your water need

How your source water — borewell, Cauvery supply or tanker — decides which technology actually helps.

5 min read · Buying Guide
Maintenance

How often should you really change your RO filters

A simple schedule for sediment, carbon and membrane replacement based on usage, not guesswork.

4 min read · Maintenance
Softeners

Signs your home actually needs a water softener

What hard water does to geysers, taps and skin — and when a softener is worth the investment.

4 min read · Buying Guide
Water Quality

What your TDS number actually means

Reading a TDS reading correctly, and why "lower is always better" isn't quite true.

3 min read · Explainer
Offices

Sizing a purifier for your office pantry

How headcount and peak-hour demand translate into the right RO capacity and storage tank size.

5 min read · Buying Guide
AMC

Is an AMC plan worth it for a home purifier

Comparing pay-per-visit servicing against an annual maintenance contract, honestly.

4 min read · AMC

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