EXTECH RF11, RF18, RF12, RF10, RF15 DATA SHEET

Specifications subject to change without notice.
Copyright © 2009 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.

www.extech.com

6/24/09 - R1

Measure the concentration of Sugar, Salt, Lubricants,

Antifreeze, Cutting Fluids & more

Available with or without Automatic Temperature Compensation

Portable Refractometers

Features:

• Easy to operate refractometers provide accurate and

repeatable measurements on easy to read scales

• Automatic temperature compensation models available

for sugar, salt, lubricants, cutting fluids, and antifreeze

• Requires only 2 or 3 drops of solution

• The prism and lens with a simple focus adjustment

provides repeatable results

• Complete with case, calibration screwdriver, and

calibration solution

Specifications
Model Type Ranges Resolution Accuracy

RF16 Sucrose 0 to 10% Brix 0.1 ±0.1%
RF11 Sucrose (ATC) 0 to 10% (10 to 30°C) 0.1 ±0.1%
RF18 Lubricants/Cutting fluids 0 to 18% Brix 0.2 ±0.2%
RF12 Lubricants/Cutting fluids (ATC) 0 to 18% Brix (10 to 30°C) 0.2 ±0.2%
RF10 Sucrose 0 to 32% Brix 0.2 ±0.2%
RF15 Sucrose (ATC) 0 to 32% Brix (10 to 30°C) 0.2 ±0.2%
RF20 Salt (ATC) 0 to 100ppt (10 to 30°C) 0.001 ±0.1‰

1.000 to 1.070 Refractive Index

RF40 Coolant (ATC) -60 to 32°F Propylene Glycol freeze point 2°F ±2%

-60 to 25°F Ethylene Glycol freeze point 2°F ±2%

1.15 to 1.30 Specific Gravity of Battery Acid 0.01

RF41 Coolant (ATC) -50 to 0°C Propylene Glycol freeze point 1°C ±2%

-50 to 0°C Ethylene Glycol freeze point 1°C ±2%

1.15 to 1.30 Specific Gravity of Battery Acid 0.01

RF30 Triple Range 0 to 41% Brix 0.2 ±0.2%

General Service 42 to 71% Brix 0.2 ±0.2%

72 to 90% Brix 0.2 ±0.2%

Dimensions/Wt RF10/RF15: 6.6 x 1.6 x 1.2" (170 x 40 x 30mm)/ 7oz (200g);

RF11/RF16: 7.5 x 1.6 x 1.2" (190 x 40 x 30mm)/ 6.5oz (185g);
RF12/RF18: 6.7 x 1.6 x 1.2" (170 x 40 x 30mm)/ 6.5oz (185g);
RF20: 7.6 x 1.5 x 1.5" (194 x 38 x 38mm)/ 8oz (227g);
RF40/RF41: 6.2 x 1.6 x 1.2" (160 x 40 x 30mm)/ 6.3oz (180g)
RF30: 7.9 x 1.5 x 1.1” (200 x 38 x 28mm)/ 21.86oz (620g)

RF18, RF20

RF10, RF16

RF15, RF40, RF11, RF12

RF10, 15 - Scale view through eyepiece

RF40 - Scale view through eyepiece

Ordering Information:

RF16 ......0 to 10% Brix Refractometer

RF11 ......0 to 10% Brix Refractometer with ATC

RF18 ......0 to 18% Brix Refractometer

RF12 ......0 to 18% Brix Refractometer with ATC

RF10 ......0 to 32% Brix Refractometer

RF15 ......0 to 32% Brix Refractometer with ATC

RF20 ......Salinity Refractometer with ATC

RF40 ......Battery Coolant/Glycol Refractometer with ATC (°F)

RF41 ......Battery Coolant/Glycol Refractometer with ATC (°C)

RF30 ......Triple Range General Service Brix Refractometer

RF30