# K851362: Standard Solution of Conductivity & Measurement of

- Pathway: 510(k) (Traditional)
- Applicant: Rna Medical Corp.
- Decided: Jun 12, 1985 after 69 days
- Product code: FKH (Solution-Test Standard-Conductivity, Dialysis)
- Device class: 2
- Regulation: 21 CFR 876.5820
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
5 later devices descend from it; 2 cite it directly.
0 of 6 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K033330: Conductivity/TDS Calibrator Solution (2004), 2 descendants of its own
- K032075: Conductivity Standard Solution-Metercare (2003), 1 descendant of its own
- K191496: TDS Standard Solution (2019), 0 descendants of its own
- K130100: Comined Standard Solution (2013), 0 descendants of its own
- K041636: H&S-Conductivity Standard Solution (2004), 0 descendants of its own

Source page: https://510kreport.com/device/K851362
Methodology: https://510kreport.com/methodology