Dielectrometry of Pharmaceutical Ingredient Solutions at Microwaves

The practical application of dielectrometry method to identify the pharmaceutical ingredients was held. The proposed waveguide-differential dielectrometer is used for the complex permittivity determination of high loss liquid such as water and water solutions in the millimeter wave range. This method allows a real-time determination of pharmaceutical ingredient content in water solution by measuring values of wave attenuation and phase coefficients difference in the differential measurement cavity. The complex permittivity of anatoxin, penicillin, gentamicin, lincomycin and glucose in fluid form as a function of the concentration was determined. The dielectric properties of various pH solutions have been determined as well. The sensitivity measurement have been detected of the water glucose solution for its real and imaginary parts equal to 1.12 and 0.68 mmol/L, respectively.