is there any point running a blank if the

a certificate with a number and no chromatogram is asking you to trust the integration you cannot see

thats the solvent peak

why do two labs integrate the same peak differently

214nm sees the amide backbone so it sees everything. 280 only sees aromatics

ms/ms or it isnt identity

nobody runs enough blanks, including me

shallow gradient

if the lab reports area percent without stating the wavelength, the number is less useful than it looks

if somebody says they ran a mass spec and does not show you a spectrum, that is a claim, not a result