  Using newly calculated electromagnetic corrections, we have made a phase
shift analysis of experimental data on pi+/- p elastic scattering up to 100
MeV, assuming the effective hadronic interaction to be isospin invariant. The
output consists of parametrised s and p-wave hadronic phases for isospin 1/2
and 3/2. It is not possible to fit the charge exchange data satisfactorily. We
give values for the s-wave scattering lengths and effective ranges and for the
p-wave scattering volumes. The combinations 2a_1 + a_3 and a_1 - a_3 of s-wave
scattering lengths extracted from pionic hydrogen data are compared with those
obtained from our analysis.
