Test plate for the new model VAH# 2 Test unit only!  This test plate is made of high quality white material.  No grids lines.  Wer have found over the years that grids can hold contaminates.  Material is Acetal Sheeting.  It will out wear any other material.  Temperature range -20 F to +200F. FDA standards and is USDA compliant.  Testing Equipment Can Not Be Returned!