Silica standards

Other Notes Please note that Sigma-Aldrich provides this product to early discovery researchers as part of a collection of rare and unique chemicals. Sigma-Aldrich does not collect analytical data for this product.

Other Notes Please note that Sigma-Aldrich provides this product to early discovery researchers as part of a collection of rare and unique chemicals. Sigma-Aldrich does not collect analytical data for this product.

CalCheck standards for Silica HR, 0.0 an

CalCheck standards for Silica LR, 0.0 an

Kit contains 0.0 and 40 NTU standards required to calibrate Orbeco-Hellige instruments. The deluxe kit also contains sealed secondary standards of each value.

Kit contains 0.0 and 40 NTU standards required to calibrate Orbeco-Hellige instruments. The deluxe kit also contains sealed secondary standards of each value.

Calibration grade Test Sieve Verification ensures conformance to ASTM E11 specifications with a 99.73% standard deviation confidence level.

Grade 54: 20 - 25 &#181:m<br>Very fast filtration for use with coarse and gelatinous precipitates. High wet strength makes this grade suitable for vacuum-assisted fast filtration of difficult coarse or gelatinous precipitates.<br>&#8224:U.S. Sales

This certified reference material (CRM) is produced in accordance with ISO 17034 and characterized in accordance with ISO/IEC 17025. This CRM is traceable to SI unit kg and measured against primary material from a National Metrology Institute

General description Full 2 in. height and 8 in.

General description Full 2 in. height and 8 in.

General description Full 2 in. height and 8 in.