Butyl Paraben identification

(1) of this product, air max 90 pas cher ethanol per 1ml solution containing about, tn requin pas cher according to the UV 5μg of – visible spectrophotometry, air max pas cher maximum absorption at 258nm wavelength. (2) The product of the infrared absorption spectrum should be consistent with the control of the map. (3) In the chromatogram records related substances, air max pas cher the test solution peak retention time should be consistent with the reference solution peak retention time.