ISO/IEC 17025 and ISO 17034 Water Density Certified Reference Materials (CRM) and Standards intended to be used for verification of measuring equipment, method validation, method verification, or other quality control processes used to determine density.

ARO Water Density CRM provides traceability of measurement to recognised national standards, and to units of measurement realised at the National Physics Laboratory (NPL) or other recognised National Metrology Institutes (NMIs). Density values are traceable and each CRM provides low levels of uncertainty, ensuring maximum accuracy of data at hand.
All materials are supplied with certified data for density at 15 °C, 20 °C and 25 °C with full traceability and uncertainties are stated on the certificate provided.

ARO’s Refractive Index Standards are packaged in tamper-evident glass bottles ensures the CRM maintains contaminant-free and of high quality.

• Manufactured and Characterized in strict accordance to ISO/IEC 17025 and ISO 17034
• Characterized in accordance with primary level ASTM D1480 methodology
• The reagent water meets the definition of Type II in the Specification ASTM D1193
• Highest level of accreditation guarantee, providing the most credible certified data available worldwide
• Fully traceable to international standards
• Manufactured in the United Kingdom by ARO Scientific Ltd
• Supplied in tamper-evident glass packaging, providing assurance of sample integrity
•  Pack size 3 x 60 mL
• 12 month shelf life