Neptune Systems Lab Grade pH Probe
This product is a monitor that is controlled by BNC connection.it is the best alternative for the dull worn out probe also, you may add another junction to the old one you have so it is called the double junction. This product (the double junction) is better than the single one as the single junction is in contact with the aquarium water which endangers it. On the other hand, the double junction is the best as it protects the probes from the contaminants that may lead to a great damage to it. The double junction is called the isolator of the aquarium as it isolates between the gel and organic substances like protein. The probes used in the double junction have long life and give a better result in protection the double junction from being hurt. The product is designed to calibrate so much longer than the single junction. This product can be replaced frequently to get the best accurate results.