An enzymatic test kit for determination of total D-glucose plus D-fructose (reducing sugars) in grape juice, fermenting wine, and other  samples.

Contains enzymes, substrates and buffer components in tablet form; each reagent tablet is dissolved in 5 mL of deionized water, permitting the user to prepare only as much working reagent as required for daily use.  One drop of Trigger (start enzymes Hexokinase and PGI)) reagent is sufficient to initiate the reaction.  The D-Fructose Standard, provided in addition to the D-Glucose Standard, is of particular benefit in monitoring the (slower) PGI mediated reaction.