I bought a pH pen a year ago for about 15 quid, bought it to do quick convenient checks, however I didn't find it convenient at all in the end because I can't be sure of its accuracy, so I set it aside.
The instructions say "The pH meter needs to be recalibrated in the following situations: it is not used for a long time, the use of electrodes is particularly frequent, the measurement accuracy is relatively high."
Now I realise this was probably written by someone who does not speak English as a first language, but it sounds like I need to recalibrate it if I don't use it often, but I also need to recalibrate it if I use it frequently, and I also need to recalibrate it if I want it to be accurate. It sounds like I will need to be constantly recalibrating, and I can't wrap my head around how to do that easily.
I used the thing about twice and then stuck it into one of my "baskets full of random aquarium stuff" because of the above. However I am now running a couple of high-tech tanks, and this pen would be really useful if I knew how to tell that it needs recalibrating, how often that's likely to be, and how to do so easily- I have the little sachets of 4.01 and 6.86, should I have a couple of bottles mixed up permanently like I do with the recalibration fluid for my TDS meter?
Anyone able to enlighten me? Am I overthinking as I do with everything?
The instructions say "The pH meter needs to be recalibrated in the following situations: it is not used for a long time, the use of electrodes is particularly frequent, the measurement accuracy is relatively high."
Now I realise this was probably written by someone who does not speak English as a first language, but it sounds like I need to recalibrate it if I don't use it often, but I also need to recalibrate it if I use it frequently, and I also need to recalibrate it if I want it to be accurate. It sounds like I will need to be constantly recalibrating, and I can't wrap my head around how to do that easily.
I used the thing about twice and then stuck it into one of my "baskets full of random aquarium stuff" because of the above. However I am now running a couple of high-tech tanks, and this pen would be really useful if I knew how to tell that it needs recalibrating, how often that's likely to be, and how to do so easily- I have the little sachets of 4.01 and 6.86, should I have a couple of bottles mixed up permanently like I do with the recalibration fluid for my TDS meter?
Anyone able to enlighten me? Am I overthinking as I do with everything?