Discussion
Why is the initial oven temperature often held low for a splitless injection?
Answer: C
The sample enters over many seconds, so a low initial temperature condenses it into a narrow band at the head, which then elutes as a sharp peak when the ramp begins. Liner temperature, gas flow and detector protection are separate matters. Refocusing a band that entered slowly is what makes splitless injection compatible with narrow peaks, and without it the technique would be unusable. The quantity that varies and the quantity that does not are worth naming before any substitution is attempted.
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