COLUMN CHROMATOGRAPHY
A two-foot long glass column
of inch diameter
with STO3-4 tap
A plug of cotton wool
Column of benzene
One hundred and fifty grams
alumina(Spence) to settle
compact in its benzene bed
Run out solvent to within
a millimetre of the tap
Carefully add the mixture — two compounds,
each making the other impure —
Avoid disturbing the surface
of the alumina
Run out solvent
Not quite let it run dry
Extra care More solvent added
The set-up is set up
The work of separation begins
Fractions of 50ml are collected,
thirty-seven in all
Each compound
separated,
purified by some other technique
More exacting work
can then begin
My love,
we too
were separated
in a different column,
less carefully,
but for a similar reason
© Gerald England
Composed: Sheffield, 1st May 1971
Publication1996
Pulsar (UK)
