Determination of chemical properties of meat: Freshness testing paper
Presented in the paper is the standard procedure in measuring K value in fish meat by means of the freshness testing paper technique.
Ng, C. S. (1987). Freshness testing paper. In H. Hasegawa (Ed.), Laboratory Manual on Analytical Methods and Procedures for Fish and Fish Products (pp. B-7.1-B-7.2). Singapore: Marine Fisheries Research Department, Southeast Asian Fisheries Development Center.