Everyone knows that the most serious pollution problems of formaldehyde than the bedroom, textiles and food products. The living room furniture decoration materials and furniture in plywood, fiberboard, particleboard and other man-made sheet contains large amounts of formaldehyde -based urea-formaldehyde resins, various types of coatings, paints contain formaldehyde. Textiles used in the production process of the N- methyl compound containing hydrocarbon formaldehyde resin as a finishing agent to increase the flexibility of the fabric to improve the crease resistance , but also the use of ionic resins containing formaldehyde Yang to improve fastness . In the food processing industry, some unscrupulous operators, formaldehyde added in the food in order to increase the shelf life of the food, improved appearance, corrosion, enhance flavor, anti- haze to increase transparency ... and so on.

      Formaldehyde detection method:

      1.Perforation method: in furniture and other products needed to detect perforation extraction or a certain number of samples to be tested, classified internationally as 1 <9mg/100g; 9mg/100g <E2 <30mg/100g.

      2.Formaldehyde climate box method: standard specimens are climate box measured the amount of formaldehyde released into the air when a steady state in (Unit: mg/M3).

      3.Drying method: Determination Dryer Method specimens released in the absorption liquid (distilled water) in the amount of formaldehyde (Unit: mg / L).

　　Currently the most important way to prevent the purchase has been tested standard products, food and so on. In addition, to learn more about some of the relevant knowledge reduce formaldehyde in the aftermath.