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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. Voropaev
Scientific Centre for Expert Evaluation of Medicinal Products
Russian 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
Scientific Centre for Expert Evaluation of Medicinal Products
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
Scientific Centre for Expert Evaluation of Medicinal Products
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
Scientific Centre for Expert Evaluation of Medicinal Products
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
Scientific Centre for Expert Evaluation of Medicinal Products
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
Scientific Centre for Expert Evaluation of Medicinal Products
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

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ISSN 2221-996X (Print)
ISSN 2619-1156 (Online)