Product Description

Particle size standards may be used to validate sizing instruments across their dynamic ranges. They are suitable for use in the performance of routine instrument calibration checks and corrections, and in the support of practice standards, such as those published by ISO, ASTM International, CEN, and other organizations. Additionally, the use of reference material permits the standardization of results between runs, instruments, laboratories, and over time. BANGS LABS NIST Traceable Particle Size Standards are monodisperse polystyrene spheres available in diameters ranging from *0nm***5µm. Suspensions are conveniently packaged in dropper bottles at 1% solids in de-ionized water with surfactant, and each bottle is provided with a Certificate of Traceability.

Our NIST Traceable Size Standards are monodisperse polystyrene spheres available in diameters ranging from *0nm to **5µm. Suspensions are conveniently packaged in dropper bottles at 1% solids, and each bottle is provided with a Certificate of Calibration and Traceability. Further lot specific data (e.g.%CV) are provided for informational purposes, but are not certified parameters. Standards are supplied in de-ionized water with a trace amount of a proprietary surfactant and sodium azide. As each particle sizing methodology has a characteristic dynamic range, we utilize three instruments to span our full range of Size Standards.

These include:

a) *0nm - **0nm: CPS Disc Centrifuge

b) 1.0µm - 9.0µm: BI-DCP Disc Centrifuge

c) *0.0µm - **5.0µm: Accusizer **0 Optical Particle Sizer

The mean diameter is determined for the major peak, and reported on the Certificate of Calibration and Traceability. It is important to note that our Standards (and the NIST SRMs to which they are traceable) are not size distribution standards, and while we do report %CV for informational purposes, this value is not considered to be certified or traceable to NIST.

REFERENCES

i. Farrell E. A Guide to Proper Sample Preparation: Electrostatically-Stabilized Nanoparticles in Water. Brookhaven Instruments, July ***0.

ii. Jillavenkatesa A, Dapkunas SJ, Lum L-S H, Particle Size Characterization, NIST special publication ****1, ***1.

iii. Weiner BB, A Guide to Choosing a Particle Sizer, Brookhaven Instruments.