HI8006L is a high-quality pH 6.86 standard buffer solution that is NIST traceable and comes with a Certificate of Analysis. The buffer solution is contained in an opaque, lightweight, airtight bottle that meets FDA requirements. Hanna calibration buffer solutions have clearly marked lot numbers and expiration dates on the label and are sealed with tamper-proof seals to ensure the quality of the solution. Hanna’s range of calibration buffers is specifically designed for long shelf life in unopened bottles.