# REED Instruments R9600 Salinity Refractometer vs Extech RF20 Salinity Refractometer: specs and price compared

A sourced, side-by-side comparison of the REED Instruments R9600 Salinity Refractometer (REED Instruments) and Extech RF20 Salinity Refractometer (Extech) among refractometers.

## Side by side

| Spec | REED Instruments R9600 Salinity Refractometer | Extech RF20 Salinity Refractometer |
| --- | --- | --- |
| US price | not published | not published |
| Brand | REED Instruments | Extech |
| Brix range pct | — | — |
| Resolution pct | 0.2 | 1 ppt |
| Accuracy pct | ±0.2 | ±0.1% |
| Atc | Yes | Yes |
| Scale type | Salinity (0-28%) | Salinity (0-100 ppt) |
| Digital or analog | Analog | Analog |
| Sample volume (ml) | — | — |
| Prism material | — | — |

## Key differences

- Resolution pct: REED Instruments R9600 Salinity Refractometer 0.2 vs Extech RF20 Salinity Refractometer 1 ppt
- Accuracy pct: REED Instruments R9600 Salinity Refractometer ±0.2 vs Extech RF20 Salinity Refractometer ±0.1%
- Scale type: REED Instruments R9600 Salinity Refractometer Salinity (0-28%) vs Extech RF20 Salinity Refractometer Salinity (0-100 ppt)

## Sources

- REED Instruments R9600 Salinity Refractometer: https://www.reedinstruments.com/product/reed-instruments-R9600-salinity-refractometer (reedinstruments.com, verified 2026-08-12)
- Extech RF20 Salinity Refractometer: https://www.extech.com/products/RF20 (extech.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/refractometers/reed-r9600-vs-extech-rf20/
Cite: Per The Front Desk Review, REED Instruments R9600 Salinity Refractometer (not published) vs Extech RF20 Salinity Refractometer (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/refractometers/reed-r9600-vs-extech-rf20/
License: CC BY 4.0.