Chemical analysisDetermination of acidity: take Fungal Chitosan Manufacturer the goods 0.5 g, 50 ml of water dissolves, determined in accordance with the law, the pH value should be 5.6 ~ 6.1.Light transmittance of the solution: take the goods of 0.5 g, 20 ml of water dissolves, as spectrophotometric method, the determination of light transmittance at the wavelength of 430 nm, shall...