WATER FILTER LISTING CHECK - ONE PRODUCT / ONE CONCERN
Date and time I checked:
Product evidence used (label / instructions / other):
Manufacturer and certifier named:
Whole-system model, including suffix:
Replacement element required:
Search field / query / selected standard:
Official confirmed listing URL:
Listing's stated currency date/time:
Standard and exact reduction claim:
Component or complete-system scope / footnotes:
Rated service cycle and flow, preserving units or N/A:
Instructions still to check / unresolved mismatch / next question:

FIVE IDENTIFICATION FIELDS
Manufacturer | Name on the device or official documentation. | A trade name and legal listing name can differ.
Whole-system model | Complete model including its suffix. | A cartridge code is not automatically a system model.
Replacement element | Exact cartridge or element required for that system. | Physical fit alone does not establish a listed combination.
Concern / claim | The actual substance or taste issue being checked. | A broad standard number does not name every claim.
Certifier named | Organization stated in the certification wording. | This guide checks NSF’s own database, not every certifier’s directory.

OBSERVED TIDAL ROW
Standard / company | NSF/ANSI 53; The Brita Products Company. | Do not apply a different company’s component record to this row.
System model | Tidal - Model #OB63/OB06. | Read the full string, including both model parts.
Replacement element | OB06. | This does not certify every housing that accepts OB06.
Service cycle / flow | 120 gallons; flow rate N/A. | Capacity is not a calendar replacement interval; N/A is not zero flow.
Claim | Lead Reduction. | No additional contaminant claim follows merely from the standard number.

SCOPE CONTRASTS
Intenza [3][Pb], in an NSF/ANSI 42 component section | [3] says it conforms to material requirements only. | Do not invent chlorine, lead or any other reduction claim for this row.
[Pb] footnote | Lead-content requirements for lead-free plumbing. | Lead content in a component differs from reducing lead in water.
CLARITY Protect 100 [4][5][6], a nearby component | Its own numbered notes describe scope and test conditions. | Those notes do not transfer to Intenza just because it is nearby.
A standard heading without a named reduction claim | Identifies the relevant standard or listing section. | It is not a list of every possible contaminant that the item reduces.

INTERPRETATION QUESTIONS
1. A result shows Tidal - Model #OB63/OB06 and OB06 in the replacement column. Is OB06 alone the full system model?
No. Record the full system string and the separate replacement element.
A cartridge number can appear in a system name; it does not establish every possible housing combination.

2. A row is under NSF/ANSI 53 and names Lead Reduction. May you add every other health-effect contaminant?
No. Keep the exact named claim.
A standard covers a category; the product’s record identifies its certified claims.

3. Intenza has [3] stating material requirements only. Does the nearby standard heading prove lead reduction?
No. The row and its footnote do not supply that reduction claim.
Material scope and the [Pb] lead-content note must not be converted into removal of lead from water.

4. An ANY claim search returns a product after two concerns were selected. Does it necessarily meet both?
No. Read the product’s actual claims or deliberately use the ALL option when appropriate.
The default ANY setting can match one of the selected claims; every result still needs exact-model review.

5. A service cycle is 120 gallons and flow is N/A. Can the record say six months at a specified flow?
No. Preserve the capacity unit and N/A.
The listing does not supply a personal calendar replacement interval or a numeric flow value in that cell.

6. Your model is absent from this NSF search. Is it proven uncertified by every organization?
No. Mark the NSF result unresolved and check the certifier and exact identifiers.
This guide examines NSF’s directory. Another organization’s record, a query mismatch or a trade-name issue requires its own verification.

SOURCES
https://info.nsf.org/Certified/DWTU/
https://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName=Brita&
https://www.nsf.org/consumer-resources/articles/standards-water-treatment-systems
https://www.cdc.gov/drinking-water/prevention/about-choosing-home-water-filters.html
https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=OB06&hdModlStd=ModlStd&