Formaldehyde Food Test Kit
Consist of : 10/bag
For Waterishlogged Food and Aquatic products :
Take 1 mL Waterishlogged food products or aquatic products soaking liquid or leaching liquid in the test tube, another test tube add the same amount of pure water or distilled water,
Shake 1-3 min Internal contrast observation.
For light colored sample liquids, an equivalent amount of liquid is selected as a control observation.
For dark solutions, experiments can be carried out with activated carbon bleaching.
For Solid food :
Take 10g Cut the sample in a color tube or beaker and add pure water or distilled water to 50 mL Shake well and soak 10 m in After 1mL The sample in the test tube to soak,
other steps and the determination of the same waterishlogged food products.
Blank contrast :
Take another test tube 1mL Pure water or distilled water as a control test, blank for care should be colorless.
If the sample solution contains more than 2mg/L When the formaldehyde, the solution will become orange, more than ten minutes after the color fade, formaldehyde concentration is high, the solution becomes orange red, the higher the concentration, the darker the color, until deep red, and the color is not easy to fade. The standard colorimetric plate can be semi quantitatively determined.