In the past decade, the Avivia analytical testing laboratory have set up an internal excipient characterization platform to study the purity and determine functionality related characteristics (FRC) of excipients like celluloses (HPMC, CMC, MCC, etc.), carbohydrates (lactose, mannose, etc.), PEO, PEG, alginate, carbomer, CPV, PVP(P), PVA, BHT, magnesium stearate, etc. Reason for this were issues with batch-to-batch variation of excipients and unpredictable stability performance of drug products.