DS EN 302-3:2013 Adhesives For Load-Bearing Timber Structures - Test Methods - Part 3: Determination Of The Effect Of Acid Damage To Wood Fibres By Temperature And Humidity Cycling On The Transverse Tensile Strength Defines a method for determining the effect on bond strength of damage to wood fibres caused by the action of acids from the adhesive or primer used in the gluing process during climatic cycling.