Development and Validation of a Procedure for Subvisible Particles Determination in Water for Injections by the Coulter Principle (Electrical Sensing Zone Method)
https://doi.org/10.30895/2221-996X-2018-18-2-98-105
Abstract
Water for injections is one of the most popular diluents used for preparation of parenteral dosage forms. The European Pharmacopoeia recommends two methods for the determination of subvisible particulate matter: Light Obscuration Particle Count Test and Microscopic Particle Count Test. The Russian Pharmacopoeia, 13th ed., additionally allows for the use of the Coulter principle (Electrical Sensing Zone method). Thus, a procedure had to be developed for subvisible particles determination in water for injections based on the Coulter principle (hereinafter — procedure). The article presents the results of development and validation of the procedure, i.e. the characteristics of accuracy, dilutional linearity, ruggedness in terms of the time factor, and repeatability for particles more than 10 μm in size. The results of subvisible particles determination obtained with the help of the developed procedure based on the Coulter principle were compared to the results obtained with the help of the light obscuration particle count test. The accuracy of the developed procedure was supported by the statistical insignificance of the differences between the obtained results. The values of ruggedness in terms of the time factor (NMT 14 %) and repeatability (NMT 15 %) did not exceed the established acceptance criterion which is equal to the acceptable limit of the instrument error for particle count in the tested samples (20 %). The dilutional linearity of the procedure was demonstrated (coefficient of determination R2 = 0.999). The results obtained during the validation studies support the possibility of using the Coulter principle for the assessment of subvisible particles in water for injections.
About the Authors
A. A. VoropaevRussian Federation
2nd Professional Category Expert of the Laboratory of Bacteriophages and Normal Flora Preparations with a Collection of Microorganisms of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
O. V. Fadeikina
Russian Federation
Chief Technologist of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality. Candidate of Biological Sciences
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
T. N. Ermolaeva
Russian Federation
1st Professional Category Expert of the Laboratory of Bacteriophages and Normal Flora Preparations with a Collection of Microorganisms of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
D. S. Davydov
Russian Federation
Head of the Laboratory of Bacteriophages and Normal Flora Preparations with a Collection of Microorganisms of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality. Candidate of Biological Sciences
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
R. A. Volkova
Russian Federation
Head of the Laboratory of Molecular Biology and Genetic Testing Methods of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality. Doctor of Biological Sciences
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
D. V. Shvedov
Russian Federation
Deputy Head of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality. Candidate of Medical Sciences
8/2 Petrovsky Blvd, Moscow 127051, Russian Federation
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Review
For citations:
Voropaev A.A., Fadeikina O.V., Ermolaeva T.N., Davydov D.S., Volkova R.A., Shvedov D.V. Development and Validation of a Procedure for Subvisible Particles Determination in Water for Injections by the Coulter Principle (Electrical Sensing Zone Method). BIOpreparations. Prevention, Diagnosis, Treatment. 2018;18(2):98-105. (In Russ.) https://doi.org/10.30895/2221-996X-2018-18-2-98-105