Temp Range: -5 to 70°C

Ceramic Pre-Filter: Replace annually - 1 included

This system has been tested for the reduction of the substances listed in the product test data sheets

No unpleasant tastes

GroLine pH 4.01 Calibration Buffer (230 mL) winemaking pH meter Temp Range: -5 to 70°CHI7004 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