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111.4 - Clays (powder form)

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.


- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only


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  97b 98b 679
Status   >> Now Selling Now Selling Now Selling
Description   >> Flint Clay Plastic Clay Brick Clay
  Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS
Unit of Issue   >> 60 g 60 g 75 g

(Concentrations are in mass fractions, in %, unless noted by an asterisk for mg/kg)
Aluminum 20.76 14.30 11.01
Antimony (2.2)* (1.6)*  
Barium (0.018) 0.07 0.0432
Calcium 0.0249 0.0759 0.1628
Cerium     (105)*
Cesium (3.4)* (16.5)* (9.6)*
Chromium 227* 119* 109.7*
Cobalt (3.8)* (16.3)* (26)*
Europium (0.84)* (1.3)* (1.9)*
Hafnium (13)* (7.2)* (4.6)*
Iron 0.831 1.18 9.05
Lithium 550* 215* 71.7*
Loss on Ignition 13.3 7.5  
Magnesium 0.113 0.358 0.7552
Manganese 47* 116* (1730)*
Phosphorus 0.02 0.03 0.075
Potassium 0.513 2.81 2.433
Rubidium (33)* (180)* (190)*
Scandium (22)* (22)* (22.5)*
Silicon 19.81 26.65 24.34
Sodium 0.0492 0.1496 0.1304
Strontium 84* 189* 73.4*
Thorium (36)* (21)* (14)*
Titanium 1.43 0.809 0.577
Zinc (87)* (110)* (150)*
Zirconium 0.05 0.022  

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only