Hanna Instruments digital refractometer for fructose concentration by weight, one model.
HI96802
This Hanna Instruments digital refractometer measures fructose concentration by weight.
A generic Brix scale assumes sucrose and reads every other sugar slightly wrong. Where the syrup is fructose — and much of the beverage industry's is — a scale written for fructose is the difference between a formulation that holds and one that drifts batch to batch.
Light bends by a different amount depending on how much is dissolved in a liquid. A refractometer measures that bend and converts it to a concentration scale. It needs one or two drops, gives an answer in seconds, and has no reagents and nothing to consume.
A digital instrument compensates for temperature automatically, which is the difference that matters: refractive index shifts with temperature enough that an uncompensated reading in a warm room is simply wrong.
Mixed-sugar syrups do not read correctly on any single-sugar scale; for a blend, use Brix and control it as a process parameter.
Supplied as one model.