Product Details:

• pH 4.01 Calibration Buffer Solution
• Made by HANNA Instruments
• Part # HI70004P
• 25 Packets per Order
• Each Packet Constains 20 mL of the Solution
• Accuracy of +/- 0.01 pH @ 25°C/77°F
• Features a Color Coded Label, Making it Easy to Identify the pH Buffer Value
• Packet made from Light Blocking Foil
• An Unopened Packet is Formulated to have an Expiration of 5 Years from the Date of Manufacture
• Lot Number and Expiration Date Printed on Each Packet