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Reported Question / Answer
Q.) A retention gap is placed between the injector and the front of the column to
1)
retain the sample and release it gradually to the column
2)
retain contaminants and prevent them from reaching the column
3)
all of the above
4)
prevent backflush of the injected solution
5)
NULL
Answer :
2
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Human Verification : Answer 2 + 3 = ?
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