The Vespiary
The Hive => Chemicals & Equipment => Topic started by: Cricket on January 17, 2003, 05:19:00 PM
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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.
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Don't waste your money on pH meters, they're unreliable and inaccurate :( Here's some applicable threads for you to read ;D
Post 313062 (missing)
(krystalle: "rookie question..........", Chemicals & Equipment)
Post 291348 (missing)
(pseudaus: "ph paper maddness??!!", Newbee Forum)
Post 277059 (missing)
(Rocksolid: "PH indicator", Newbee Forum)
Post 182127 (missing)
(Synthia: "ph meter", Stimulants)
Post 83672 (missing)
(noj: "digital ph-meter (cheap)", Chemicals & Equipment)
Post 80251 (missing)
(ANONYM: "pH meter problems", Chemistry Discourse)
Post 55160 (missing)
(SuperAssman: "Diluting NaOh &Ph Go Up?", Stimulants)
Post 44595 (missing)
(Jacked: "Re: pH-Tester", General Discourse)
Post 15808 (missing)
(speedygonzaless: "ph paper in oz", Newbee Forum)
Post 7331 (missing)
(XplosiveKemistry: "Ph tester", Newbee Forum)
Post 97314 (missing)
(DroYd: "Damn PH gauge,..........^^^I Hate Them^^^.........", Chemicals & Equipment)
Post 84245 (missing)
(ero323: "iso or no? pH paper ok?", General Discourse)
Post 123038 (missing)
(DeJay: "PH paper", Newbee Forum)
Post 109642 (not existing)
Post 104537 (missing)
(dr.fart: "REALLY Stupid Question", Chemistry Discourse)
Post 100563 (missing)
(Commodium: "pH Meters, How Often to Calibrate?", Chemistry Discourse)
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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 it´s make no sense to use one.
Is this correct for hcl titrations too ?
Thanks for every Info. /Joe.
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Titration is best done using only half of the free base, that way when you overshoot you can recover :) Cheap pH meters don't work with non aqueous solvents, and often quit working at the most inconvenient time :(