HI4010-02 is a 500 mL premium quality 100 mg/L (ppm) fluoride standard solution.  Hanna ISE standards have the lot number and expiration date clearly marked on the label. Bottles are air tight with a tamper-proof seal to ensure the quality of the standard solution. Hanna's line of standards have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• 100 ppm (mg/L) fluoride standard
• Air tight bottle with tamper-proof seal
• Lot number and expiration date printed on each label