USA PLEASE READ: News about domestic delivery using YSI.com

Refractometer Calculators

In conjunction with Bellingham + Stanley we offer calculators to be used with your refractometer. Take a look at our ABV calculator, calibration oil calculator, and AG fluid calculator by clicking the link.

Your concentration, under control

OPTi® digital and Eclipse optical handheld refractometers and accessories from Bellingham + Stanley. Specialising in optical and digital refractometers. Instruments for measuring beer, jam, honey, marmalade and syrups. Automotive refractometers for measuring AdBlue® (DEF) concentrations and Antifreeze. Sports science refractometers for urine testing and refractometers for aquariums.

All refractometers are supplied with a Certificate of Calibration for quality assurance.

These instruments are just the tip of the iceberg and we'd like to invite you to contact us today if you can't find what you're looking for; even if you can't see it online, the chances are we've got the scale you need!

Blog posts

OPTi leads the way – Eclipse refractometer discontinued

OPTi leads the way – Eclipse refractometer discontinued

December 1st, 2025:  We hereby announce the withdrawal of our Eclipse optical handheld refractometer from production.  Our Eclipse refractometer ca...
Domestic Delivery In The USA

Domestic Delivery In The USA

We are introducing you to our sister company YSI who operate out of Yellow Springs, Ohio, and are ideally placed to distribute Bellingham + Stanley product to users across the United States of America. 

A Guide to Refractometer Verification and Calibration

A Guide to Refractometer Verification and Calibration

Compared to many other instruments in the laboratory or factory, using a refractometer is a very simple process. In most cases you apply a small sa...

OPTi Digital Handheld Refractometer 0-95 Brix

A digital handheld refractometer with full 0-95 °Brix range. Why pay more for less?

Ideal for food producers that want to measure across the whole Brix range, including incoming fruit, juice or concentrated fruit pulp, sauces, jams, jellies, gums, raw sugar liquids, blended sugars and honey. Read More...


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