This certified reference material (CRM) is produced and certified in accordance with ISO Guide 34:2009 and ISO/IEC 17025:2005. All information regarding the use of this CRM can be found on the certificate of analysis. Values of analytes vary lot to lot. Some lots may not contain all analytes.

UN No.: 1824 pH: 13.5 (H2O, 20°C) Solubility: (20°C) not applicable Density: 1.022 g/cm3 (20°C) Ignition Point: 13.5 (H2O, 20°C)

UN No.: 3264 pH: 0.5 (H2O, 20°C) Solubility: (20°C) not applicable Density: 1.013 g/cm3 (20°C) Ignition Point: 0.5 (H2O, 20°C)

Solubility: (20°C) soluble Density: 0.998 g/cm3 (20°C)

1 mL = 1 mg Si (1,000 ppm Si) Si in 3% HNO3 / trace HF

Secondary reference material for acidimetry, traceable to NIST SRM Certipur® volumetric standards for reliable results in titration Proper titer determination is an important prerequisite for accurate and comparable analysis in the titration laboratory. Influential factors such as…

UN No.: 3264 pH: 0.5 (H2O, 20°C) Density: 1.013 g/cm3 (20°C) Ignition Point: 0.5 (H2O, 20°C)

Synonyms: Amorphous Silicon Dioxide Chemical formula: SiO₂ Molar mass: 60.09 CAS number: 63231-67-4 Chemical and physical data Molar mass: 60.09

Solubility: (20°C) insoluble Flash Point: 63°C Density: 0.85 g/cm3 (20°C)

Analysis Note 1000 mg/L Se in 2% nitric acid, prepared with high purity selenium metal, HNO₃ Trace SELECT® and water Trace SELECT® Ultra. General Description This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025…