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  2. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
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Slightly used potassium meter, 130$ shipped

Discussion in 'Trades, swaps, sales' started by Tom Barr, Oct 25, 2008.

  1. Tom Barr

    Tom Barr Founder
    Staff Member Administrator

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    Want to measure K+ and do not like the junky test kits? These are pretty good and have good usable accuracy( about 0.5ppm) over the entire range and more at lower ranges under 10ppm. Comes with 2 curvettes and caps, instructions, easy to use for aquarist with straight forward instructions.

    Hanna HI 93750 Potassium ISM. No reagents are included.
    Low use(maybe 100 samples read), small, comes with a 9 volt battery, built in timer for reading the sample after reaction time.

    Run about 190$ ea
    HANNA Ion Specific Meters - Ben Meadows Company

    Reagents are not cheap, about 90 cents per test but you can use the standard methods to DIY those for cheap.

    [​IMG]

    130$ includes shipping

    Regards,
    Tom Barr
     
  2. Gerryd

    Gerryd Plant Guru Team
    Lifetime Member

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    Hi Tom,

    Sold! I'll take it. Please PM me with payment instructions........I just sent you an e-mail.

    BTW, I was looking at the nitrite and nitrate meters on this link. Thoughts? Have not found a cheap HACH Dr980 colorimeter lol

    Thanks.
     
  3. Tom Barr

    Tom Barr Founder
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    Sold to Gerry!
     
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