The Apera Instruments AI1132-M 84 µS/cm Conductivity Standard Solution (8 oz) is specially formulated for the precise calibration and validation of all types of conductivity meters and electrodes. Manufactured in an ISO 17025 certified laboratory in the USA, this solution ensures reliable accuracy within ±0.5 µS/cm at 25˚C (77˚F). Each batch is traceable to NIST-certified reference materials, providing confidence and compliance in your measurements. The solution comes with clearly labeled expiration and lot numbers for easy recordkeeping and quality assurance. For your documentation needs, the Material Safety Data Sheet (MSDS) is available for download, and a Certificate of Analysis (COA) can be acquired upon request.