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Testare pH
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PostPosted: Fri Nov 07, 2008 2:59 pm    Post subject: Testare pH Reply with quote

eu nu inteleg o chestie: la mine, apa de osmoza are ph sub 5, (testere banda jbl ) ... si voi spuneti ca ph este de 7.

nu mai inteleg nimic: inseamna ca benzile de la jbl sunt porcarii...
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PostPosted: Fri Nov 07, 2008 3:23 pm    Post subject: Reply with quote

si cu aceleasi testere, apa din bazine, cat are?
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PostPosted: Fri Nov 07, 2008 3:35 pm    Post subject: Reply with quote

inainte sa pun apa de osmoza sau dupa ce se pune apa de osmoza, in acvariu?
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PostPosted: Fri Nov 07, 2008 3:37 pm    Post subject: Reply with quote

pai daca tot intrebi, da-ne ambele valori icon_mrgreen
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PostPosted: Fri Nov 07, 2008 3:41 pm    Post subject: Reply with quote

pai si intr-o parte si alta are cam 5( adica galben deschis)...........iar voi spuneti ca are 7.....(care este verde)
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PostPosted: Fri Nov 07, 2008 3:44 pm    Post subject: Reply with quote

coane, un singur lucru este clar: apa pura are pH neutru (adica 7). orice supozitie si orice discutie ar trebui sa plece de la acest banal adevar icon_biggrin
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PostPosted: Fri Nov 07, 2008 4:33 pm    Post subject: Reply with quote

Apa mea din osmozor nou proaspat iesita are pH-ul exact 7
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PostPosted: Fri Nov 07, 2008 5:51 pm    Post subject: Reply with quote

ca tot veni vorba despre apa rezultata din instalatia de osmoza, va spun si eu ca apa are ph-ul 5, kh 0, gh 0. astea-s rezultatele testelor de la sera, tetra si acum, mai nou folosesc testele de la jbl (toate testele sunt cu reactiv si nu benzi de hartie).
apa de la robinet are ph-ul 7.5, uneori 8. kh 6 si gh-ul variaza uneori de la 10-12.
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PostPosted: Fri Nov 07, 2008 5:59 pm    Post subject: Reply with quote

deci stefane, ph=5 sa inteleg
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PostPosted: Fri Nov 07, 2008 6:02 pm    Post subject: Reply with quote

DA! ph-ul este 5 la apa de osmoza.
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PostPosted: Fri Nov 07, 2008 6:02 pm    Post subject: Reply with quote

cu osmozor jbl nu ?
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PostPosted: Fri Nov 07, 2008 6:14 pm    Post subject: Reply with quote

nu, nu este jbl.

asta-i instalatia:
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PostPosted: Fri Nov 07, 2008 7:29 pm    Post subject: Reply with quote

ADX wrote:
coane, un singur lucru este clar: apa pura are pH neutru (adica 7). orice supozitie si orice discutie ar trebui sa plece de la acest banal adevar icon_biggrin


Apa provenita din RO nu e pura, adica nu e doar H2O. icon_mrgreen E doar aproape de puritate.
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PostPosted: Fri Nov 07, 2008 9:27 pm    Post subject: Reply with quote

Si nu prea are alte motive sa aiba pH=5, sau diferit de 7 decat dizolvarea in apa a bioxidului de carbon din aer. Dar pentru asta e nevoie totusi de catva timp, ca nu se dizolva instantaneu pana la saturatie. Cu cat sta mai mult in contact cu aerul, cu atat scade PH pana la stabilizare. Ca sa iasa din filtru cu PH acid, ar trebuii sa fie acidul deja in permeat cand iese din filtru si asta nu-i posibil. Normal ar fi ca permeatul sa sa tinda spre PH=7, chiar daca sta mai mult timp in contact cu aerul, daca se aeriseste cu piatra. Poate pare absurd sa scoti din apa bioxidul de carbon provenit din aer, cu piatra care introduce aer in apa, dar stim toti ca cine foloseste CO2 pentru plante evita sa aeriseasca apa cu piatra difuzoare, care scoate CO2-ul din apa.
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PostPosted: Sat Nov 08, 2008 3:33 pm    Post subject: Reply with quote

Vezi ca ai instalatia cu susul in jos.
Daca tie iti scoate PH-ul 5, atunci cred ca o s-o intorc si eu, pe a mea. icon_idea icon_biggrin
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