GroLine pH 4.01 Calibration Buffer (500 mL) Master Controller and overall durability

and overall durability

vine weevils

Automatic shutdown for extreme temperature (user adjustable set-point)

Sold in cases of 1200

Zero maintenance

GroLine pH 4.01 Calibration Buffer (500 mL) Master Controller and overall durabilityHI7004 050 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