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Extech
Extech RF Series Portable Refractometers
Quote on request
No online payment · add lines to RFQ BOM
Portable Brix/salinity/coolant refractometers; ATC models. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Series Coverage
RF10/RF15/RF16/RF11/RF18/RF12/RF20/RF40/RF41/RF30 portable optical refractometers
Rf15 Sucrose
0–32% Brix, ATC 10–30°C, resolution 0.2 Brix, accuracy ±0.2%
Rf10 Sucrose
0–32% Brix, resolution 0.2 Brix, accuracy ±0.2% (no ATC)
Rf20 Salinity
0–100 ppt and RI 1.000–1.070, ATC 10–30°C, resolution 0.001 / 1 ppt, accuracy ±0.1‰
Rf16 Rf11
0–10% Brix, resolution 0.1, accuracy ±0.1% (±ATC on RF11)
Rf18 Rf12
0–18% Brix lubricants/cutting fluids, resolution 0.2, accuracy ±0.2%
Fits handheld concentration checks where you need an Extech RF Series optical refractometer for Brix, salinity, lubricants, or coolant/glycol with optional ATC and only 2–3 drops of sample.
Key advantages
- Brix models — RF10/15 0–32%; RF11/16 0–10%; RF12/18 0–18% lubricants
- Salinity — RF20 0–100 ppt with ATC
- Coolant — RF40/RF41 glycol freeze-point + battery-acid SG
- Accuracy — Typically ±0.1% to ±0.2% Brix class by model
- Kit — Case, calibration screwdriver/solution; focusable eyepiece
Typical applications
- Food Brix checks.
- Cutting-fluid concentration.
- Salinity and coolant freeze-point surveys.
Selection guide
- Scale — Brix vs ppt vs glycol
- ATC — 10–30 °C models
- Range — 10% vs 32% vs triple-range RF30
- Calibration fluid — Included solution
Common mistakes
- Wrong model scale for the fluid.
- Skipping ATC/temperature context.
- Dirty prism causing false readings.
When to RFQ / what to tell us
- Exact RF model; quantity; ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 30644 |
| Brand | Extech |
| Model | RF Series |
| Product type | Refractometer |
| Type | Handheld optical portable refractometers (RF10/11/12/15/20/30/40/41 family) |
| Brix models | RF10/RF15 0–32% Brix; RF11/RF16 0–10%; RF12/RF18 0–18% lubricants/cutting fluids |
| Salinity | RF20 0–100 ppt with ATC (10–30 °C) |
| Coolant | RF40/RF41 glycol freeze-point + battery-acid SG with ATC |
| Accuracy | ±0.1% to ±0.2% Brix / ±0.1‰ salinity class by model |
| Features | 2–3 drops sample; focusable eyepiece; ATC on selected models; case + calibration solution |
Documents
FAQ
Q: ATC models? A: Yes — selected RF models include 10–30 °C ATC.
Q: Sample size? A: Typically 2–3 drops.
Q: What should I send for a quote? A: RF model, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Series Coverage | RF10/RF15/RF16/RF11/RF18/RF12/RF20/RF40/RF41/RF30 portable optical refractometers |
| Rf15 Sucrose | 0–32% Brix, ATC 10–30°C, resolution 0.2 Brix, accuracy ±0.2% |
| Rf10 Sucrose | 0–32% Brix, resolution 0.2 Brix, accuracy ±0.2% (no ATC) |
| Rf20 Salinity | 0–100 ppt and RI 1.000–1.070, ATC 10–30°C, resolution 0.001 / 1 ppt, accuracy ±0.1‰ |
| Rf16 Rf11 | 0–10% Brix, resolution 0.1, accuracy ±0.1% (±ATC on RF11) |
| Rf18 Rf12 | 0–18% Brix lubricants/cutting fluids, resolution 0.2, accuracy ±0.2% |
| Rf40 Coolant | Propylene −60 to 32°F / Ethylene −60 to 25°F freeze points + battery acid SG 1.15–1.30 (°F ATC) |
| Rf30 Triple | 0–41 / 42–71 / 72–90% Brix general service, resolution 0.2, accuracy ±0.2% |
| Sample Volume | 2 or 3 drops of solution |
| Optics | Prism and lens with simple focus adjustment |
| Rf10 Rf15 Size Weight | 6.6×1.6×1.2 in (170×40×30 mm); 7 oz (200 g) |
| Rf20 Size Weight | 7.6×1.5×1.5 in (194×38×38 mm); 8 oz (227 g) |
| Included Kit | Case, calibration screwdriver, pipette, calibration solution |