NONDESTRUCTIVE INSPECTION METHOD FOR DRIED LAVER AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a nondestructive inspection method for a dried laver with which an objective evaluation using an optical absorption as a parameter can be achieved in relation to a color tone of the dried laver which is an important inspection item therefor. SOLUTION: This method comprises setting the dried lavers 6 and 7 to a circular sample holder, irradiating the dried lavers 6 and 7 with a light, converting the light absorption to the dried lavers 6 and 7 into a sound, amplifying the sound output by amplifiers 11 and 12 and recording the amplified output with a recording apparatus 16.