Turbidity 20 NTU Calibration Standard – Formazin

General description
This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
Application
This CRM can be used to calibrate and validate all types of laboratory turbidity meters in the 20 Nephelometric Turbidity Unit (NTU).
Features and Benefits
Gravimetrically prepared standard, verified and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
Traceable to the SI and higher order standards from NIST
Assigned value based on a purity determination by mass balance and gravimetrically prepared value
Homogeneity assessed in accordance with ISO Guide 35
Available in high-density polyethylene bottles of volumes 100, 500, and 1000 mL to assure safe delivery
Accompanied with a certificate of analysis (CoA) having information on the expiry date for an effective audit
Prepared using deionized water as a solvent
Other Notes
Values of analytes vary lot to lot. Some lots may not contain all analytes.