"Proof tests are called for (by BS8539) on a sample of anchors on ALL jobs except those where anchors with European Technical Approval/assessment (ETA) have been installed by trained operators working under supervision." QUOTE: Construction Fixings Association (CFA). To make sure Zip-Clip systems adhere to BS8539 standards, we are able to conduct on-site pull testing around the UK. This service is offered on fixings & anchors that are designed to attach Zip-Clip systems to concrete and masonry. Our Technical Managers are able to provide proof tests which help to validate the quality of the installation, and give you peace of mind. On completion of the site testing, Zip-Clip can then supply a test report. Please contact the Technical Manager in your area to book an appointment.