Crystal Quest Nitrate Under Sink Water Filter System
A nitrate-selective anion exchange cartridge rated to 5,500 ppm, in single, double or triple housings.
$161
Usability
Nitrate is a well-water problem that carbon does nothing about, so a dedicated anion exchange cartridge is the correct answer and few manufacturers offer one at point of use. Crystal Quest publishes a capacity figure of 5,500 ppm nitrate against the cartridge part number, which is more specific than most competitors manage, and the resin is regenerable in principle rather than strictly disposable. The single configuration handles nitrate only, so anyone on chlorinated water should start at the double where the SMART cartridge covers chlorine, chloramine and heavy metals. Nitrate is the contaminant where getting it wrong matters most for infants, and this system carries no NSF/ANSI 53 nitrate reduction listing, no effluent target and no influent limit, which makes it a poor choice as the sole barrier on a well with a known nitrate result. Maximum flow is 0.5 GPM.
- Nitrate-selective anion exchange, which carbon-only systems cannot do
- Capacity published as a number, 5,500 ppm nitrate
- Three configurations on one page spanning 72 dollars
- Full operating envelope published including connection size and pressure range
- Faucet and installation hardware included
- No NSF/ANSI 53 nitrate reduction listing on a contaminant where that matters most
- No stated influent limit or effluent target for nitrate
- The single configuration does not address chlorine or chloramine at all
- Maximum flow of 0.5 GPM is slow for a kitchen tap
- One-year limited warranty and filter media cannot be returned
An under-sink system built around a nitrate-selective anion exchange cartridge rated to 5,500 ppm nitrate, sold in single, double and triple housings. The double adds the SMART redox and carbon cartridge and the triple adds a carbon block. Quarter-inch connection, 20 to 60 psi, 0.5 GPM maximum flow, supplied with faucet and installation hardware.
Additional information
Specification: Crystal Quest Nitrate Under Sink Water Filter System
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