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Cricket
(Newbee) 01-17-03 17:19 No 399238 |
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Differences in pH Meters. | Bookmark | |||||
SwiC is looking at some pH meters and can't seem to find much info on a particular brand/model. If the name is unexceptable, SwiC understands the mark out. The brand is Chekmite, and he can't find any specs on these: Chekmite pH Testers (WLS-30018-01), 1 pH Meter (WLS-30018-03), 3 pH Meter or maybe someone realizes the differences and can share their insight. Swic as never bought one before and knows little about them. Any help is greatly appreciated. Thanks a bunch, C. If it ain't clean, it ain't my scene! |
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lugh (Moderator) 01-17-03 18:05 No 399250 |
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pH meters are unreliable for our purposes | Bookmark | |||||
Don't waste your money on pH meters, they're unreliable and inaccurate ![]() ![]() Post 313062 (krystalle: "rookie question..........", Chemicals & Equipment) Post 291348 (pseudaus: "ph paper maddness??!!", Newbee Forum) Post 277059 (Rocksolid: "PH indicator", Newbee Forum) Post 182127 (Synthia: "ph meter", Stimulants) Post 83672 (noj: "digital ph-meter (cheap)", Chemicals & Equipment) Post 80251 (ANONYM: "pH meter problems", Chemistry Discourse) Post 55160 (SuperAssman: "Diluting NaOh &Ph Go Up?", Stimulants) Post 44595 (Jacked: "Re: pH-Tester", General Discourse) Post 15808 (speedygonzaless: "ph paper in oz", Newbee Forum) Post 7331 (XplosiveKemistry: "Ph tester", Newbee Forum) Post 97314 (DroYd: "Damn PH gauge,..........^^^I Hate Them^^^.........", Chemicals & Equipment) Post 84245 (ero323: "iso or no? pH paper ok?", General Discourse) Post 123038 (DeJay: "PH paper", Newbee Forum) Post 109642 (not existing) Post 104537 (dr.fart: "REALLY Stupid Question", Chemistry Discourse) Post 100563 (Commodium: "pH Meters, How Often to Calibrate?", Chemistry Discourse) |
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JoeCool25 (Hive Bee) 01-17-03 19:02 No 399265 |
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Question about HCl titration at the end..... | Bookmark | |||||
Don't waste your money on pH meters, they're unreliable and inaccurate..... Lugh, Question about HCl titration at the end, is it there not better to have a ph meter, with the always changeing ph? (perhaps to go from 13 to 5,5 ?) Swim know that often to get to 7 it takes very much more hcl and after 7 to 6 and 5 it goes very fast. With ph-paper swim must be very carefull not to overshoot. Swims ph-meter (old) is broken. Swim thinks to buy a new one. Now swim read that itīs make no sense to use one. Is this correct for hcl titrations too ? Thanks for every Info. /Joe. |
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lugh (Moderator) 01-17-03 19:21 No 399270 |
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titration | Bookmark | |||||
Titration is best done using only half of the free base, that way when you overshoot you can recover ![]() ![]() |
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