Lindamulla, I.Wijesekara, K.B.Wasala, M.P.2021-04-292021-04-29201122359877http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/6625/39-2011-Development%20of%20a%20Detector%20to%20Determine%20Presence%20of%20Formalin%20in%20Fish.pdf?sequence=1&isAllowed=yNote: See the PDF Version Formalin is an aqueous solution of the chemical compound formaldehyde. Formalin is used as a disinfectant solution. Formalin is commonly used in aquariums to present the growth of parasites. In some cases formaldehyde is produced naturally by certain types of fish. Overuse of formalin causes many health risks for human. Many of these health issues may occur due to illegal use of the formalin. Recently some cases of illegal use of formalin were reported in many coastal areas in Sri Lanka. However, there is no rapid and economical method for formalin detection. Most of the detection methods require expensive and highTechnology apparatus, a large amount of samples, long sample preparation and detection time. Therefore, it is necessary to develop a simple, rapid and a convenient method avoiding the above mentioned disadvantages. The instrument designed is a convenient, rapid and a simplified method of detecting formalin iii fish and can be handled easily. It works at a high accuracy in a range between 100 ppm to 1000 ppm. The design is portable. Samples can be tested within a short period of time. The design is also cost effective and simple.enAquaculture and FisheriesScience & TechnologyAnimal Production TechnologyChemical EngineeringOther