It is the refill for the pH meter solution, the Combo Meter and the Guardian. It is easy to clean thanks to its tubular glass structure. Special high quality glass.
Warning: Last items in stock!
The refill for the pH meter solution, the Combo Meter and the Guardian. Easy to clean thanks to the tubular glass structure. High quality special glass. The maintenance-free gel-filled electrode (not refillable) with a double protective seal gives it a longer life.