A method of verifying the color and tinting strength of a manufactured batch of a semi-transparent wood stain. In accordance with the method, a standard batch of the wood stain is formed and then mixed with a specified amount of a white colorant to form a standard measurement batch. A test sample of...http://www.google.com.au/patents/US7042566?utm_source=gb-gplus-sharePatent US7042566 - Method of verifying color and strength properties of batches of wood stains