GroLine pH 4.01 Calibration Buffer (500 mL) Master Controller Sold in cases of 1200

Sold in cases of 1200

Stability Indicator - An hourglass indicator is displayed on the LCD until a stable reading is obtained

safe to apply on food crops up to one day before harvest

T5 tube with reflector

GroLine pH 4.01 Calibration Buffer (500 mL) Master Controller Sold in cases of 1200HI7004 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