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Silica particles in aqueous solutions (22 g/kg, zeta potential for electroacoustic)

Item no.

ERM-FD306

Unit

ampoule

Shipment details

No Dangerous Good /not restricted

Price on request

Description

ERM-FD306 consists of a suspension of silica particles at a mass fraction of 22 g/kg in a borate buffer at pH 8.9. The material is available in 25 mL pre-scored ampoules containing approximately 25 mL of suspension /// identical to NIST SRM 1993

Analyte	Concentration	Unit	Additional information	Method
Mean electrophoretic mobility	- 4,5 ± 0,3	10-8m2V-1s-1	certified value	As obtained with electrophoretic light scattering (ELS) at a sample temperature of 25 °C and by applying ISO 13099-2:2012
Mean zeta potential	- 56 ± 4	(mV)2	certified value	As calculated from the certified electrophoretic mobility value using the Smoluchowski approximation f(κa) = 1.5 (for a temperature of 25 °C, a dynamic viscosity of 0.89 mPa.s and a value of 78.4 for the dielectric constant of water)
Conductivity	0,42	mS/cm	additional material information

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Description

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Miscellaneous

Certificate of Analysis (specimen)

Product data sheet