HI7086L is a premium quality 23 g/L Na+ (sodium) standard solution for ISEs. Hanna standard 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 standard 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