PH Paper Vs PH Pen

Hi, wasn't sure where to best ask my question so I'll try here. Up until now I have been using GroTek Ph test strips. I have recently purchased a Preciva PH test pen. I calibrated the test pen with solution provided @ 6.8 and 4.01.

The problem is , my PH test strips are reading 6.0 and my PH pen is reading 7.3. Of the 2 , what one is likely more accurate ? And if I have been feeding my plants too high of PH for a long period of time can I just drop them to the proper PH or should I do it slowly ?

Thanks.

 

[MickJ]

Hi, wasn't sure where to best ask my question so I'll try here. Up until now I have been using GroTek Ph test strips. I have recently purchased a Preciva PH test pen. I calibrated the test pen with solution provided @ 6.8 and 4.01.

The problem is , my PH test strips are reading 6.0 and my PH pen is reading 7.3. Of the 2 , what one is likely more accurate ? And if I have been feeding my plants too high of PH for a long period of time can I just drop them to the proper PH or should I do it slowly ?

Thanks.

I would look up my local water provider and see what they say the tap water should be. My water supplier says 7.5. Then you can test it against that.

Sent from my comfy chair.
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[MesaBoogie]

Thanks @Rollin_along . I just had a look and if the info is accurate they say it's between 6.5 and 8. So I guess my test papers are wrong. It's kind of strange though, When I use my test papers on the 6.8 solution it seems 100% accurate. But when tested against my tap water that my pen reads at 7.3 the test papers go way out of whack and read 6.0

So I have been using PH up for a long time now. I'm Guessing I have been feeding my girls around 7.6-8 PH. My Accurate 8 soil PH meter has been reading 6.8 steady in Sunshine mix [HASHTAG]#4[/HASHTAG]. I'm guessing my soil has been buffering it out and saving me a little.

 

[MickJ]

That's a massive range, strange, but at least you solved the problem.

Thanks @Rollin_along . I just had a look and if the info is accurate they say it's between 6.5 and 8. So I guess my test papers are wrong. It's kind of strange though, When I use my test papers on the 6.8 solution it seems 100% accurate. But when tested against my tap water that my pen reads at 7.3 the test papers go way out of whack and read 6.0

So I have been using PH up for a long time now. I'm Guessing I have been feeding my girls around 7.6-8 PH. My Accurate 8 soil PH meter has been reading 6.8 steady in Sunshine mix [HASHTAG]#4[/HASHTAG]. I'm guessing my soil has been buffering it out and saving me a little.

Sent from my comfy chair.
[emoji16][emoji41] [emoji43][emoji848]