GroLine pH 4.01 Calibration Buffer (230 mL) winemaking ORP electrode from a tree) and allow

from a tree) and allow gravity to pull water through the filter

Understanding ORP Measurement

Run water for 2-3 minutes to flush and activate

Fill with water and enjoy clean

Wine samples present unique challenges for pH measurement due to their complex chemistry

GroLine pH 4.01 Calibration Buffer (230 mL) winemaking ORP electrode from a tree) and allowHI7004 023 is a high quality pH 4. 01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers 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. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened