Definitions for "Acid free paper"
(Also referred to as alkaline). Paper of neutral or basic chemical makeup. Often this paper is brighter and more opaque than traditional "acid" paper. It has a longer shelf life and is therefore often specified for archival reasons.
A neutral pH paper which will not excessively darken with age. Acrylic Synthetic resin used in an emulsion as the binding medium for acrylic colors. Acrylic Paint A water based paint which dries quickly and is available in tubes or bottles.
A paper manufactured to a neutral pH reading. Used for fine art prints, limited edition printing, permanent records and to protect other materials where contact with paper acidity would be harmful.