If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Has anyone got any experience of using electronic pH testers? I'm thinking of getting one as I have quite acidic soil and get a bit anoyed with the chemical tests (keep doing them bloody wrong!).
I have one from a garden centre and find it easy to use.
My soil varies from pH 4 to 6 . I've given up testing and testing- No lime where the spuds are going and loads elsewhere. I now just do what the neighbours on the adjacent lotties do- and it works well.
I think mine cost about £15 and needs wiping between uses.
"Nicos, Queen of Gooooogle" and... GYO's own Miss Marple
Unless you have solutions to calibrate a pH meter, it will be inaccurate and will drift in its reading, even if it was calibrated at manufacture. In the lab, I calibrate the meter before every use and that's a £1000 jobbie!
Sluglobber is right, no such thing as a reliable electronic pH tester, and the cheaper they get the worse they are.
Have you tried a liquid drop test like the ones they use for aquarium, just a couple of drops, the water changes colour and a little card tells you the pH. Put a little sample of the soil in a container (test tube or the like, often come with the kit) and add tap water till it looks like two parts water to one part soil. Shake well and stand till the soil settles, then decant and add reagent, or carefully add direct (without disturbing the soil again).
The result will not be spot-on and will be further out the harder your water is, but in moderate and soft water it is more reliable than an uncalibrated meter, and as accurate as you need to be. Also an awful lot cheaper, you should be able to pick up a kit for £3 and it should do dozens of tests
Comment