OPTi Digital Handheld Refractometer - Refractive Index (RI ATC)

OPTi Digital Handheld Refractometer - Refractive Index (RI ATC)

Regular price £225.00 Sale

The primary scale of this refractometer is 1.33-1.54 refractive index. This scale is in fact the primary scale from which all other scales are derived. You could, therefore, use this refractometer for almost any application - providing you had the information required to form your results.

For most users we recommend our application-based refractometers, however for specialist use this can be used for:


  • chemicals
  • surfactants
  • detergent blends
  • fertilisers
  • diesel fuel additives
  • anti-freeze fluids


This OPTi refractometer comes with 1 preset scale and 2 empty scales ready for user definition.

Scale A is set to Refractive Index

Scale B is empty: User Defined

Scale C is empty: User Defined 

The OPTi Digital Handheld Refractometer - Refractive Index (RI) scales are preselected at despatch, but may be reassigned using the scale selection method detailed here.

Portable, powerful, and ready to go

The OPTi® Digital Handheld Refractometer from Bellingham + Stanley puts a powerful, fully portable instrument in the palm of your hand. Powered by just 2xAAA batteries, the OPTi refractometer can take 10,000 readings in 50 common refractometer scales.

OPTi refractometers are made in the UK and feature a durable IP65 rated housing, a stainless steel prism dish which rapidly stabilises sample temperature, and a clear LCD display. All tri-scale OPTi refractometers have the ability to measure across the full 0-95 °Brix range.

To learn more about OPTi Digital Handheld Refractometers click here, or to read about Eclipse optical refractometers click here.

Refractometer Shop is proud to stock a series of OPTi Digital Handheld Refractometers with pre-selected scales to suit a wide range of applications. If you require a specific configuration and wish to buy in bulk please contact us today to see how we can help. 


Technical information

Product code: 38-01RS-A3-B0-C0

Scale A

Range: 1.33-1.53
Resolution: 0.0001
Accuracy: ±0.0003

Scale B

Range: user
Resolution: user
Accuracy: user

Scale C

Range: user
Resolution: user
Accuracy: user


Frequently bought with OPTi

AG 40 calibration fluid - £39.99

AG Fluids are aqueous solutions that cover the range 1.33-1.40 RI (0-40 °Brix equivalent) and have a shelf life of 12-months. Add to your order for free shipping within the UK.