Close cooperation between supplier and customer offers the best opport
unity for further quality improvement. The ISO requirement for purchas
ing has precisely and clearly started that: ''The supplier shall estab
lish and maintain documented procedures to ensure that purchase produc
t confirms to specified requirements, evaluate and select subcontracto
rs on the basis of their ability to meet subcontract requirements incl
uding quality system requirements, establish and maintain quality reco
rds''. For the oleochemical manufacturing industries engaged in the IS
O certification process, this was regarded as a mean to stronger invol
ve the supplier in the quality idea. Following steps are necessary for
the implementing of an efficient quality management system: 1. to spe
cify exactly all purchased products, 2. to define the criteria for the
supplier rating, appraisal and selection, 3. to sign quality agreemen
ts with the supplier, 4. to perform supplier audits. This lecture refe
rs to the experience of an oleochemical company and describes how to f
ulfill the ISO 9001 requirement with less effort and paper work.