BCR Quartz Reference Particles
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  BCR Quartz Reference Particles


Quartz Reference Particles from The Institute for Reference Materials and Measurement (IRMM) are non-spherical, certified materials used for evaluating particle size analysis instruments or sieves requiring samples with a wide size distribution.  They are also useful for evaluating laser diffraction spectrometers and electrical resistance analyzers.

The reference particles were prepared, characterized and certified under the sponsorship of the Community Bureau of Reference (BCR) the standards bureau of the European Common Market.  They were analyzed by laboratories in Germany, Italy and the United Kingdom.

NOTE:
This material has been certified by BCR, the former reference materials program of the European Commission.  The product certificates have been revised under the responsibility if IRMM. 

   Product Detail


Mined in Frechen, Germany, the quartz is mostly silicon dioxide with trace amounts of iron (Fe), titanium (Ti), sodium (Na) and calcium (Ca).  The chemical composition was characterized using hydrofluoric acid dissolution, the resulting residue was analyzed.  Sodium and calcium content were determined by flame photometry.  Iron and titanium content were determined using spectrophotometric techniques.

BCR 66, 67, 69 and 70 were calibrated by gravimetric sedimentation and BCR 68 and 130 by a sieving technique by the BCR.  The samples were also analyzed by TEM, electrical sensing zone, sieving and several sedimentation methods.  A continuum of the weight distribution is provided for each sample.  The density was determined by pyknometer and is approximately 2.6 g/cm3.

Results and methods are summarized in two detailed reports: 

  • Certification Report on Reference Materials of Defined Particle Size, for BCR 66 through 70.
  • Certification Report on Reference Materials of Defined Particle Size, for BCR 130. 
Both reports are included with the kit.*

Each individual bottle of quartz reference particles is accompanied by a Certificate of Measurement, which outlines measurement methods, chemical analysis data and instructions for use.

*The appropriate report will be included with orders of six or more kits (any combination) at no charge.
 BCR Quartz Reference Particles
 PRODUCT# Price  Size Range  Density  Quantity  
           
 BCR 66      -    0.35 - 3.5 μm 2.62 g/cm³ 10 g   SELECT  
 BCR 70      -    1.2 - 20 μm 2.64 g/cm³ 10 g   SELECT  
 BCR 67      -    2.4 - 32 μm 2.65 g/cm³ 10 g   SELECT  
 BCR 69      -    14 - 90 μm 2.65 g/cm³ 10 g   SELECT  
 BCR 130      -    50 - 220 μm 2.64 g/cm³ 50 g   SELECT  
 BCR 68      -    160 - 630 μm 2.65 g/cm³ 100 g   SELECT  
 BCR RPT1      -    See Details - -   SELECT  
 BCR RPT2      -    See Details - -   SELECT  
 BCR Kit      -    See Details - -   SELECT  
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Specifications:
Particle Composition :Quartz
Particle Density :2.6 g/cm³
Index of Refraction :Unknown
Fill Volume :10 - 100 grams (product dependent)
Expiration Date :≥ 24 months
Additives :None
Package Includes :Certificate of Analysis and Certification to BCR, Material Safety Data Sheet (MSDS)
Storage & Handling :Store at room temperature. Keep bottle tightly sealed to avoid contamination.