Electrical sensing zone method

Lines, R.W. 1996. The electrical sensing zone method (The Coulter Principle). In Liquid and Surface Borne Particle Measurement Handbook. (J.Z. Knapp, ed.) pp. 113-154 Marcel Dekker, New York. 

The electrical sensing zone method (the Coulter principle)... 

British Standard BS3405 Part 5,(1983), Determination of Particle Size Distributions, Recommendations for the Electrical Sensing Zone Method, The Coulter Principle, 450, 462, 463... 

ISO 13319 Determination of particle size distributions - Electrical sensing zone method, 450... 

FIG. 21-17 Multisizer 3 COULTER COUNTER from Beckman Coulter, Inc., uses the electrical sensing zone method. 

Photozone Counter A particle- or droplet-sizing technique, analogous to the electrical sensing-zone methods, that relies on visible light absorption in sample introduced into a small chamber. The particles or... 

Multiple techniques can be used to measure the particle size distribution, for example electrozone sensing, sedimentation, laser diffraction, and microscopy. With the exception of microscopy, they all require calibration and the results depend on the technique. For example, in a round-robin study reported in Reference 4, the commonly used electrical sensing zone technique (Coulter Counter) was compared to microscopy and sedimentation. The average particle size determined by the electrical sensing zone method was by about 25%... 

BS ISO 13319 (2000) Particle size analysis - electrical sensing zone method. British Standards Institution, London. 

BS ISO 13319, Determination of Particle Size Distributions - Electrical Sensing Zone Method, 2000. 

D. R. Alliet, A Study of Available Particle Size Standards for Calibrating Electrical Sensing Zone Methods, Powder Technology. 13 (1976) 5—7. 

Introduced in 1983, this Part gives recommendations for the electrical sensing zone method (the Coulter principle). It is recommended that the primary calibration technique is that of "mass integration", where a known volume of particles under test is used to calibrate the volumetric size response directly. This allows the method to be self-calibrating and to approach being absolute. 

Electrical sensing zone method Coulter Counter... 

A method of particle size analysis of the drug substance that may be predictive of ultimate ointment quality has been developed. This is shown by the data in Tables 1 and 2. The laser diffraction method is able to establish which micronised batches are likely to give acceptable ointments. This method, which is carried out in liquid paraffin following dispersion with a high shear mixer, is much more representative of actual processing conditions than the electrical sensing zone method which is conducted in aqueous electrolyte. 

The Electrical Sensing Zone Method (The Coulter Principle)... 

These first optically based counters were quickly displaced for most applications by the simpler and more effective non-optical electrical sensing zone method which remains the dominant laboratory tool for such work. 

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