Hanna HI50036P Groline Quick Cal Solution - pH & EC/TDS Calibration (25 x 20mL) emergency water double-junction MA911B/2 lab-grade pH electrode

double-junction MA911B/2 lab-grade pH electrode (included) for low maintenance and high performance

and extended service life

Keep your COM-300 multi-parameter meter performing at its best with the genuine HM Digital SP-C3 replacement probe

EC is often converted to TDS in parts per million (ppm)

Eco-friendly: Reduce plastic waste from bottled water

Hanna HI50036P Groline Quick Cal Solution - pH & EC/TDS Calibration (25 x 20mL) emergency water double-junction MA911B/2 lab-grade pH electrodeHanna HI50036P Groline Quick Cal Solution Professional pH & EC TDS Calibration The Hanna HI50036P Groline Quick Calibration Solution is a professional grade, dual purpose calibration standard designed for fast, accurate single point calibration of Groline pH and EC TDS meters. Each box contains 25 individually sealed 20mL sachets that deliver fresh, uncontaminated calibration solution every time, ensuring optimal meter accuracy for hydroponics,