This kit contains two bottles of pH calibration solution (pH 4.01 / pH 7.00), two bottles of conductivity calibration solution (1.413 mS / 12.88 mS), and one bottle of 3M KCl storage solution, each containing 250ml. In addition, a Calbox is included, which can be filled with up to four different solutions and makes calibration much easier.

• pH solutions: pH 4.01 and pH 7.00, 250ml each
• EC solutions: 1.413 mS/cm and 12.88 mS/cm, 250ml each
• Storage solution: 3M KCl solution, 250ml
• Precise pH calibration: The pH solutions accuracy of pH 0.015 allows highly accurate calibration
• Easy recognition: Based on the colors, you can recognize the correct pH solution at a glance (pH 4: red, pH 7: green)
• The EC calibration solutions are suitable for any type of conductivity meter
• The 3M KCl storage solution preserves the sensitivity and accuracy of pH / ORP electrodes
• Use immediately: Instead of dissolving powder in distilled water first, you can use the solutions immediately
• Long shelf life, batch certificates available on the Internet
• The Calbox has space for 4 solutions and caps that can be closed, simplifying each calibration