Unitech Scientific products

D-Glucose/Fructose UniTab Reagent (=GF):  An enzymatic test kit for determination of total D-glucose plus D-fructose (reducing sugars) in grape juice, fermenting wine, and other  samples.   

L-Malic Acid Unitab Reagent (=LMA):  An enzymatic test kit for determination of L-malic acid in grape juice, fermenting wine, and other liquid samples and other samples.  Contains enzymes, substrates and buffer components in tablet form and as aqueous solutions and suspensions.  

Determine primary amino nitrogen compounds (or Nitrogen by OPA = NOPA) in grape juice & fermenting wine/must samples.. Contains buffered N-Acetyl-l-cysteine (NAC) tablets, ophthaldialdehyde (OPA), and Nitrogen Standard Solution. Each tablet is dissolved in 5 mL of deionized water, permitting the user to prepare only as much working reagent as required for daily use.  This “fast blanking” method only requires working reagent (the blank reagent solution is no longer required).  This procedure is based on a published method from UC Davis.