Home Cosmetic Science Talk Formulating General PH meter - anyone tried the basic eBay ones?

  • PH meter - anyone tried the basic eBay ones?

    Posted by VitalikButerin on June 18, 2019 at 8:58 am

    Hi.
    Any cheap alternative to ph meter that can do a good job? 

    crillz replied 4 years, 9 months ago 4 Members · 5 Replies
  • 5 Replies
  • Pharma

    Member
    June 18, 2019 at 12:49 pm
    I have something like THAT one. Can’t complain at all except that the cap with the storage solution isn’t tight and dries out without putting parafilm around. But hey 30 bucks, whatcha expect, alien tech? :smiley:
    Have heard hat the “neon marker like” meters aren’t worth it…
  • crillz

    Member
    August 15, 2019 at 6:30 am

    Pharma said:

    I have something like THAT one. Can’t complain at all except that the cap with the storage solution isn’t tight and dries out without putting parafilm around. But hey 30 bucks, whatcha expect, alien tech? :smiley:
    Have heard hat the “neon marker like” meters aren’t worth it…

    Looking at purchasing one also, did u get above one Pharma? Any good?

  • ngarayeva001

    Member
    August 15, 2019 at 9:13 am

    I have this one. It works fine but is a pain to calibrate

    https://www.amazon.co.uk/Hanna-Instruments-Electrode-Batteries-Resolution/dp/B0085WOIMQ

  • Pharma

    Member
    August 15, 2019 at 6:50 pm
    @crillz It’s actually THAT one. Was cheaper with better customer rating…
    Ran it against fresh calibration solution, pH strips (the ones with a bunch of small colour squares), and a temp meter. Values seemed correct. EC I still have to check.
    For a pH meter, it’s relatively easy to calibrate.
    On the other hand, I wouldn’t use it in a lab for enzymatic assays or if used on a daily basis (it would probably break soon due to exhaustion). Originally got it because I mix my own fertilisers and for that purpose it’s more than enough ;) .
  • crillz

    Member
    August 16, 2019 at 12:30 am

    Excellent, thank you both. I asked because I have bought a cheaper gadget from China, my mate had a $400 golf range finder that he got off eBay to measure distance. I then purchased the China version and found it does exactly the same job and you can’t even really tell the difference. Have heard different stories though. 

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