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<blockquote data-quote="Farmer" data-source="post: 430775" data-attributes="member: 4060"><p>Zabrinuo sam se radi ph jer su biljcice mjestimicno kako koja (ne sve) dobile par zutih flekica. Sve ostalo sam provjerio i pazio da je ok jedino sto sam ph metar dobio tek nakon skoro 2 tjedna sto rastu i sto sad vidim da je ph vode (i zemlje ocito) daleko izvan preporucenih granica pa sad hocu to posto poto dovesti gdje spada.</p><p></p><p>Sto se ph elektroda tice ima i tu mala znanost, al vecinom upute idu ovako :</p><p><strong><span style="font-size: 22px"><span style="color: #000000">"</span></span></strong><span style="color: #808080"><span style="font-size: 15px">Use the solution recommended by the manufacturer, see the instruction manual for the electrode. However, as a general rule, store your pH electrode in the same solution as the</span></span><a href="http://www.all-about-ph.com/reference-electrolyte.html" target="_blank"><span style="color: rgb(128, 128, 128)"><span style="font-size: 15px">reference electrolyte</span></span></a><span style="color: #808080"><span style="font-size: 15px"> of the electrode. In most cases this is a 3 mol/l KCl solution. Electrodes with a </span></span><a href="http://www.all-about-ph.com/silver-chloride.html" target="_blank"><span style="color: rgb(128, 128, 128)"><span style="font-size: 15px">bridge electrolyte</span></span></a><span style="color: #808080"><span style="font-size: 15px"> should be stored in the electrolyte of the outer electrolyte compartment.</span></span></p><p><span style="color: #808080"><span style="font-size: 15px">Most electrodes are shipped with a protective cap. Fill the protection cap with storage solution.</span></span></p><p><span style="color: #808080"><span style="font-size: 15px">Close off the filler opening if there is one.</span></span></p><p></p><p><span style="color: #808080"><span style="font-size: 15px">Alternative</span></span></p><p><span style="color: #808080"><span style="font-size: 15px">Should a reference electrolyte solution not be available, an appropriate substitute is a storage solution of 1 gram of potassium chloride (KCl) per 200ml of either the buffer 4 or 7.</span></span><strong><span style="font-size: 22px"><span style="color: #000000">"</span></span></strong></p><p></p><p>Ja sam prema uputama jednog foruma danas kupio KCl sol (223,8 g) i 1L demineralizirane vode (moze i RO voda). To se pomijesa i dobije 3 molarna otopina kakvu svi preporucuju (i prodaju po ebay-u) za cuvanje elektroda. Neznam da vodu i detergent al svakom slucaju provjereno da se nesmiju pustiti da se osuse jer sporo citaju nakon toga a mozebit i da se preciznost poremeti.</p><p></p><p>Hvala ti i lp !</p></blockquote><p></p>
[QUOTE="Farmer, post: 430775, member: 4060"] Zabrinuo sam se radi ph jer su biljcice mjestimicno kako koja (ne sve) dobile par zutih flekica. Sve ostalo sam provjerio i pazio da je ok jedino sto sam ph metar dobio tek nakon skoro 2 tjedna sto rastu i sto sad vidim da je ph vode (i zemlje ocito) daleko izvan preporucenih granica pa sad hocu to posto poto dovesti gdje spada. Sto se ph elektroda tice ima i tu mala znanost, al vecinom upute idu ovako : [B][SIZE=6][COLOR=#000000]"[/COLOR][/SIZE][/B][COLOR=#808080][SIZE=4]Use the solution recommended by the manufacturer, see the instruction manual for the electrode. However, as a general rule, store your pH electrode in the same solution as the[/SIZE][/COLOR][URL='http://www.all-about-ph.com/reference-electrolyte.html'][COLOR=rgb(128, 128, 128)][SIZE=4]reference electrolyte[/SIZE][/COLOR][/URL][COLOR=#808080][SIZE=4] of the electrode. In most cases this is a 3 mol/l KCl solution. Electrodes with a [/SIZE][/COLOR][URL='http://www.all-about-ph.com/silver-chloride.html'][COLOR=rgb(128, 128, 128)][SIZE=4]bridge electrolyte[/SIZE][/COLOR][/URL][COLOR=#808080][SIZE=4] should be stored in the electrolyte of the outer electrolyte compartment. Most electrodes are shipped with a protective cap. Fill the protection cap with storage solution. Close off the filler opening if there is one.[/SIZE][/COLOR] [COLOR=#808080][SIZE=4]Alternative Should a reference electrolyte solution not be available, an appropriate substitute is a storage solution of 1 gram of potassium chloride (KCl) per 200ml of either the buffer 4 or 7.[/SIZE][/COLOR][B][SIZE=6][COLOR=#000000]"[/COLOR][/SIZE][/B] Ja sam prema uputama jednog foruma danas kupio KCl sol (223,8 g) i 1L demineralizirane vode (moze i RO voda). To se pomijesa i dobije 3 molarna otopina kakvu svi preporucuju (i prodaju po ebay-u) za cuvanje elektroda. Neznam da vodu i detergent al svakom slucaju provjereno da se nesmiju pustiti da se osuse jer sporo citaju nakon toga a mozebit i da se preciznost poremeti. Hvala ti i lp ! [/QUOTE]
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