| Brand | Hanna |
|---|---|
| Size | None |
| Color | None |
| Item Height | 0 |
| Package Height | 71 |
| Item Length | 0 |
| Package Length | 198 |
| Package Width | 72 |
| Item Width | 0 |
| UPC | 462833713302 |
Check the listing for details. Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle. Color: None, Condition: New. Listed at 32.99 USD. This buffer value is widely used in water purification plants, in the food industry, and wherever the pH is expected to be slightly acidic. Certificate of Analysis A Certificate of Analysis (COA) is available for each batch of buffer solutions.