Hanna GroLine pH 7.01 Calibration Buffer (500 mL) winemaking refractometer bundle Food-Grade: Yes (safe for direct

Food-Grade: Yes (safe for direct food contact)

Calibration tags: Shows which buffers were used for calibration

dry place away from direct sunlight and moisture

20 mL sachet (2 pcs

Test Parameters: Free Chlorine + Total Chlorine

Hanna GroLine pH 7.01 Calibration Buffer (500 mL) winemaking refractometer bundle Food-Grade: Yes (safe for directHI7007 050 is a high quality pH 7. 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