For formaldehyde determination in biological samples, food, beverages, and the environment. Fast and sensitive. Use of 50 µ L sample. Linear detection range 1.2 to 500 µ M Formaldehyde in 96-well plate assay. Convenient. The procedure involves adding a single working reagent and reading the absorbance after 30 minutes. Room temperature assay. High-throughput. “Add-mix-read” type assay. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: OD565nm; Samples: Biological samples, food, beverages, and the environment; Procedures: 30 min