Hanna HI7004-012 GroLine pH 4.01 Calibration Buffer 120ml tool-clean Features and included items:

Features and included items:

the carbon used is Australian RC412 at 1200+ IAV

It is reusable for up to 6 months of continuous use at a time between dusting and machine washing

Use when building new soil to properly moisten the peat

This compost can be used as a top dress or biologically active tea

Hanna HI7004-012 GroLine pH 4.01 Calibration Buffer 120ml tool-clean Features and included items:HI7004 012 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