Useful links

HP

HP media solutions locator

HP large format ink and media print permanence and water resistance charts 

HP permanence and durability testing details

HP photo permanence and durability

HP's Commitment to Rigorous Permanence & durability testing

New HP premium photo papers

Wilhelm Imaging Research 

The permanence and care of colour photographs

The permanence and care of analog and digital colour photographs

The Wilhelm analog and digital colour print materials reference collection