HI7085M is a premium quality 0.3 g/L NaCl standard solution for the calibration of salinity meters and sodium ISEs. Hanna calibration solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hannas line of calibration solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle

• Lot number and expiration date printed on each label