Digital or smart pH meter for spa

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mailmarshall

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#303181 22-Jan-2023 12:09

Hi just wondering if anyone uses a digital or smart pH meter for their spa that they can recomend?

I can see a few digital ones online but no clue how accurate they are eg

https://www.mightyape.co.nz/product/high-precision-digital-water-ph-tester/36288747?gclid=Cj0KCQiAt66eBhCnARIsAKf3ZNG7RRN-glrLKBYa32SlUpBtLvmZbWiQSF7gmgpCjqCPIqZhHjJfJecaAl9MEALw_wcB

As for the smart version only can find one and its was too expensive (440 Euros)!

https://baltresto.com/shop/wood-fired-hot-tubs/hot-tub-accessories/smart-water-thermometer-with-app

sir1963

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#3025475 22-Jan-2023 13:37

Accurate pH measurement is dependant on temperature.

Scientific pH meters have the ability to put in the temperature so it can compensate. The users will also use Buffer solutions so the slope can be calibrated.

Shindig

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#3025659 23-Jan-2023 08:58

I have one of these for sale. Brand new, never used

https://bluelab.com/new_zealand/bluelab-ph-pen

The little things make the biggest difference.

hsvhel

1273 posts

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#3025677 23-Jan-2023 09:23

I looked into this a while back, along with alternatives to granulated chlorine.

Long story short, given we operate at differing temps throughout the year, it was easier to stick with the strips for spot testing "at that point in time"

Noticed the last time we bought some, that they are starting to get pricey for a one use system.

Be interested in seeing how the search progresses for you

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mentalinc

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#3025697 23-Jan-2023 10:24

Apera have some options on Amazon. the PH60 was down to 40USD a few weeks back, they also have a salt one if you run SWG for the spa as well.

Or look into chemical tests - https://clearchoicelabs.com.au/ seems to be the better option for NZ, the taylor reagents are just too hard to get from the US to NZ in general.

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