CAFFEINE

Caffeine determined via HPLC. Volume Required: 1 x 100 mL

pH

Standard reference method – pH meter. Volume Required: 1 x 12 fl. oz. (355 mL)

POLYPHENOLS

Total (colorimetric – spectrophotometric). Volume Required: 1 x 12 fl. oz. (355 mL)

TRUE AND APPARENT PROOF

Direct reading vs. distillation value (measured via Rudolph densitometer) and total solids via distillation residuals. Volume Required: 1 x 750…

SPECTROSCOPIC FINGERPRINTING OF A SAMPLE

UV-visible scan – 220 to 1000 nanometers. Volume Required: 1 x 50 mL

SORBIC ACID – HPLC

Sorbic acid via HPLC. Volume Required: 1 x 12 fl. oz. (355 mL)

SULFUR DIOXIDE (SO2 – SULFITES) TOTAL

Pararosaniline – spectrophotometric. Typically used for beer and malt-based samples. Volume Required: 1 x 12 fl. oz. (355 mL)