What is the "Replenishable junction" you have invented?
Over time, the junction which is the most sensitive part of the pH electrode can become clogged. This results in the electrode response becoming increasingly sluggish and eventually impossible to calibrate. With the new Hanna replenishable junctions, by using an ordinary pair of tweezers, simply pull out 1-2mm (1/8'') of the fiber junction and you will literally have a reconditioned pH electrode. This procedure can be repeated up to 15 times, before the whole fiber gets out.