10 bottles per set.
0.01g or 0.02g per bottle.

This standard has been introduced by popular demand resulting from an increased interest in the properties and performance of Nanoparticles or sub-micron powders. The soda-lime glass microspheres are supplied as an aqueous dispersion in a 5ml pipetting bottle. To analyse, simply add more deionised water and place in an ultra-sonic bath for a few minutes, shake well and pipette the complete bottle into the particle size measurement instrument. The standard has been characterised by scanning electron-microscopy, pipette centrifuge and some of the latest laser sizing methods.

Dispersion notes:
Sample Analysis. Half fill a dropping bottle containing the aqueous dispersion with deionised water. Remove the label and place in an ultrasonic bath for 10 minutes with occasional shaking. Transfer the complete contents of 1 or more bottles into the particle sizing instrument. For instruments requiring a fraction of the sample, shake well and immediately add the requisite number of drops into the analysis chamber. Store any unused aqueous dispersions upright in a cool, dry place.

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