Division 7.2 Column

United Kingdom

The stationary phase is made of Hallcomid M 18 on chromosorb. The column must yield a resolution ‘R’ equal to, or better than, 1,5, where:

R = 2 \frac{d' (r_{2} {- r}_{1})}{W_{1} {+ W}_{2}}

let:

r₁ and r₂

retention times (in minutes),

W₁ and W₂

peak widths at half height (in millimetres),

the chart speed (in millimetres per minute).