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Xiaomi Mijia Smart Water Purifier N800G

Model / fitment code: MR872-3 ยท Status: unknown

Sources reviewed: 2026-09-11. Compatibility remains at the provenance level shown below.

Also sold as: MR872-3

Composite cartridges

Composite cartridge OEM Stage Media Provenance Measured? Source
Xiaomi J21-PPC-1 OEM PPC pretreatment PP + activated carbon + non-woven fabric (manufacturer-claim) Manufacturer claim No Source

Composite cartridge mount: Mijia Smart Water Purifier N800G Composite Filter PPC1 mount

Provenance: Inferred

Status: unmeasured

Working device-and-stage-specific mount grouping from manufacturer fit documentation. Connector geometry, sealing and electronic recognition are unmeasured. Other cartridge stages and device families remain separate.

RO cartridges

RO cartridge OEM Stage Media Provenance Measured? Source
Xiaomi J21-RO-800-1 OEM RO with post-carbon RO membrane + post-activated carbon + non-woven fabric (manufacturer-claim) Manufacturer claim No Source

RO cartridge mount: Mijia Smart Water Purifier N800G Filter RO1 mount

Provenance: Inferred

Status: unmeasured

Working device-and-stage-specific mount grouping from manufacturer fit documentation. Connector geometry, sealing and electronic recognition are unmeasured. Other cartridge stages and device families remain separate.

Notes

The linked global specification names MR872-3 (110 V, 60 Hz). This record covers that documented model, without assuming all regional N800G variants have identical parts. Xiaomi specifies separate PPC and RO cartridge positions. Physical fit and cartridge identification do not establish water-quality performance or certification.

Sources

Corrections and additions

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