How often do you calibrate

Indoor Growing Climate
1

Quick question guys how often do you calibrate your Apera pH meter?

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2

I check mine weekly and calibrate if needed. Since I calibrated it about a month ago it has not needed it since.

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3

So far once in the last month. I always reference with the 7.0. If it’s off, I calibrate.

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4

Always good to do a 2 point check. 4 and 7 or whatever your pH calibration solutions are.

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5

Once a month at least. I always place the meter in fresh tap water first. If it reads outside pH 7-7.2 I calibrate; using pH 7 and 4 solutions. Sometimes I just do it just to be sure.
I also store it in the proper storage solution, although I’ve heard of others storing it in the pH 4 calibration solution.

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6

I check calibration every Monday, and recalibrate as necessary.

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7

I calibrate mine beginning of growing season. (im outside grower) then as needed. Im blessed to have consistent water ph and very low ppm. I could almost mix nutes with out testing but I do. Its easy to tell if im getting out of wack …. and I do store it in the proper storage solution over the winter.

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8

My pH meter is setup for one point calibration… takes literally 2 seconds so I calibrate a couple times a week

SX610 Waterproof pH Pen Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe

https://www.amazon.com/dp/B01ESYG6B0/ref=cm_sw_r_cp_apa_i_PTnHCbRRW70X1

I had one that was more expensive but I like this one better :+1: :blush:

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