# Extech RF20 Salinity Refractometer: specs and price

**Price (US):** Not published (extech.com displays a "Buy Now" link but no listed price; no confirmed MSRP found on a corroborating authorized-dealer page within available access), as of 2026-08-12.
**Brand:** Extech

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | Not published |
| Brand | Extech |
| Brix range pct | — |
| Resolution pct | 1 ppt |
| Accuracy pct | ±0.1% |
| Atc | Yes |
| Scale type | Salinity (0-100 ppt) |
| Digital or analog | Analog |
| Sample volume (ml) | — |
| Prism material | — |

## Frequently asked questions

**How much does the Extech RF20 Salinity Refractometer cost?**

The Extech RF20 Salinity Refractometer has no published US price as of 2026-08-12.

**What are the Extech RF20 Salinity Refractometer's key specs?**

Extech RF20 Salinity Refractometer (Extech): resolution pct 1 ppt, accuracy pct ±0.1%, atc Yes, scale type Salinity (0-100 ppt), digital or analog Analog. Full sourced spec sheet verified 2026-08-12.

Source: https://www.extech.com/products/RF20 (extech.com, accessed 2026-08-12)
Canonical: https://frontdeskreview.com/product/refractometers/extech-rf20/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl