Under-sink reverse osmosis · checked 16 Oct 2026
iSpring RO500AK-BN NSF Certified Tankless Reverse Osmosis Water…
Model RO500AK-BN · replacement parts FCF500, MRO500, FCA500
Lead:Brand claim onlyPFAS:Brand claim only
Each claim, checked
What the brand says, what a certification listing shows for this model, and where each fact comes from. We read listings; we do not test products.
- Certified (listing checked)The certifier’s public listing shows this claim for this model.
- Brand says certifiedThe brand says certified; IAPMO’s listing does not show it. NSF can be checked by hand.
- Brand claim onlyThe brand claims it without citing a certification.
| Contaminant | Brand claim | Standard | Certifier | Confirmed? | Source, date checked |
|---|---|---|---|---|---|
| Lead | “effectively removes up to 99% of over 1,000 contaminants, including lead (up to 98% removal), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| PFAS (no compounds named) | “Remove Lead , Chlorine, PFAS” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Total dissolved solids (TDS) | “iSpring RO500AK-BN tankless reverse osmosis system is NSF 58 certified for TDS reduction.” brand source | NSF/ANSI 58 | NSF (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Chlorine | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Fluoride | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Arsenic | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Asbestos | Same statement as for Lead. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
Filter changes, by the brand’s numbers
How often iSpring says to replace each part. Real filter life depends on how much water you use and what is in it.
| Part | Brand says replace every | Changes a year | Source, date checked |
|---|---|---|---|
| FCF500 sediment + carbon composite filter (stage 1) | 6 months“Replacement Filters FCF500 ... Replacement Cycle Up to 6 months” | 2 | brand sourcechecked 16 Oct 2026 |
| MRO500 RO membrane (stage 2) | 24–36 months“MRO500 ... Replacement Cycle Up to 6 months 24 -36 months” | 1 every 2–3 years | brand sourcechecked 16 Oct 2026 |
| FCA500 carbon alkaline filter (stage 3) | 12 months“FCA500 ... Replacement Cycle Up to 6 months 24 -36 months Up to 12 months” | 1 | brand sourcechecked 16 Oct 2026 |
Certification listings found
No IAPMO R&T listing matched this model when we searched on 16 Oct 2026.
Check it yourself
NSF’s and WQA’s terms don’t allow automated lookups, so these links open their public listings for this model:
- NSF listing search: RO500AK
- NSF listing search: iSpring
- WQA listing search: RO500AK
- WQA listing search: iSpring
- IAPMO R&T listing directory
What the brand says about certification
- “iSpring RO500AK-BN NSF Certified Tankless Reverse Osmosis Water Filtration System” source checked 16 Oct 2026
- “[NSF 58 Certified] iSpring RO500AK-BN tankless reverse osmosis system is NSF 58 certified for TDS reduction. Scan the QR for the NSF online test report.” source checked 16 Oct 2026
- “Our NSF Certification validates the entire filtration system's performance, setting us apart from competitors that certify only components or materials.” source checked 16 Oct 2026