Absorbance and transmittance go beyond 6 and 7000 respectively in ftir spectrum while there is no sample?

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Paul Milham

So that somebody can help, please explain the difference between "in the absence of sample ... (and) in background mode"

Abdullah Rehman

@paul Minhan , background mode is when taking background spectrum, and other spectrum were recorded in the presence and absence of sample mean sample was not present

I'm still confused: isn't in the absence of sample the same as background? Perhaps the problem is mine?