This document describes the sample handling protocols used by Affymetrix to handle the UKB genotype samples.

This resource can be downloaded or viewed using the link: affy_lab_process2017.pdf

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/docs/affy_lab_process2017.pdf