Metallo-organic single element standards ROTI ® Star Certified and traceable to NIST standard reference materials Manufactured in accordance with ISO 17034 in an accredited environment Tested in a laboratory accredited to ISO/IEC 17025 Detailed, batch-specific certificate of analysis is available online Properties: Metallo-organic compounds in 75 cSt hydrocarbon oil Trace metal concentrations determined by ICP-OES Suitable for use with ASTM D4927, D4951, D5185, D5708, D6443, D6481, D6595 and other standard test methods for elemental analysis Many of these standards are sulfonate-based and thus contain high levels of sulfur Excellent for AAS, ICP, RDE, XRF and other elemental analysis techniques 12 months shelf life for unopened bottle Calcium Standard Solution in 75 cSt Hydrocarbon Oil ROTI ® Star 1 000 µg/g Ca, Metallo-Organic Calibration Standard