Re: [Biofuel] PH meter calibration
Ph meters and calibration: http://www.eutechinst.com/tech-tips.htm As for where to find calibration fluid ? places that sell tropical fish and the tanks ect. You can probably find a good meter there too, I did. Works on both batteries and 110V. Luc - Original Message - From: Keith Addison [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, February 10, 2005 9:49 AM Subject: Re: [Biofuel] PH meter calibration Hello Jeremy I was wondering if anyone knows what PH the lye water for Titration should read on the ph meter. using the better titration method Um, dunno. Why would that be useful? I have made a good batch of BD using virgin oil, and have made alot of soap with wvo because my meter is off calibration. I am having trouble finding calabration fluid to calabrate my meter. See what the list archives has to say about calibration: http://infoarchive.net/sgroup/biofuel/?keywords=calibrationtime=allu sertime=2002-12-31 Information Archive at NNYTech Best wishes Keith Thank you, Jeremy ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/ ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
Re: [Biofuel] PH meter calibration
Jeremy, pH meters go out of calibration extremely fast and without proper calibration with trusted calibration fluid you can be off in the order of magnitude range. Until you get fluids, I would recommend using paper strips as they are more reliable than an uncalibrated pH meter. I am fairly sure that www.mcmaster.com sells calibration fluids, but you could also check with VWR, Cole-parmer and the other lab supply companies. Andy On Wed, 9 Feb 2005 23:52:16 -0500, Jeremy Tracy Longworth [EMAIL PROTECTED] wrote: I was wondering if anyone knows what PH the lye water for Titration should read on the ph meter. using the better titration method I have made a good batch of BD using virgin oil, and have made alot of soap with wvo because my meter is off calibration. I am having trouble finding calabration fluid to calabrate my meter. Thank you, Jeremy ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/ ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
RE: [Biofuel] PH meter calibration
Hello Jeremy. Some pH meters have microprocesor with values for calibration with 3 specific buffer solution of a given pH value stored in their memory. I remember some 10 years ago, I used a german Hanna pH meters have this feature and if I was trying to use standar buffer solution of 4.00 ; 7.00 and 10,00 but the calibration menu ends with an error message; I only could standarized that pH meter with their own factory expensive buffer solutions to be sell in their representative. Good way to continously earn money along the years, for that company. Others pH meters less expensive, more simple or older are ajusted by a potenciometer (a variable resistence with a knob), I worked with Fisher, Jenway and Cole-Parmer desktops and field pH meter all of the 3 were ajusted with 2 simple set points 7,00 and 10,00 buffers for alkaline range with the aid of 2 variable resistance knobs one to standarize and the other to correct drift and 7,00 and 4,00 values buffers solutions for acidic m edium to be controled. The working conditions of the pH probe I check first with a less than a week old buffer solution, I set the potentiometer funtion in the milivolts scale, if it gives a value 0 miliVolts with a buffer 7.00 with a maximun variation of + / - 30 mV,the probe is in working conditions, then I go for the calibration mode ajusting to pH 7 and then the acidic or alkaline buffer solution. I know it is possible to ajust with 4.00 and 10.00 buffer solutions with some pH meters as well. Regards. Juan -Original- From: Jeremy Tracy Longworth [SMTP:[EMAIL PROTECTED] Sent: Feb 10, 2005 12:52 AM For:[EMAIL PROTECTED] Subject:[Biofuel] PH meter calibration I was wondering if anyone knows what PH the lye water for Titration should read on the ph meter. using the better titration method I have made a good batch of BD using virgin oil, and have made alot of soap with wvo because my meter is off calibration. I am having trouble finding calabration fluid to calabrate my meter. Thank you, Jeremy ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
Re: [Biofuel] PH meter calibration
cheaper, and needs no calibration, other than a little practice. Jeremy Tracy Longworth wrote: I was wondering if anyone knows what PH the lye water for Titration should read on the ph meter. using the better titration method I have made a good batch of BD using virgin oil, and have made alot of soap with wvo because my meter is off calibration. I am having trouble finding calabration fluid to calabrate my meter. Thank you, Jeremy ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/ -- -- Bob Allen,http://ozarker.org/bob -- - The modern conservative is engaged in one of Man's oldest exercises in moral philosophy; that is, the search for a superior moral justification for selfishness JKG --- [This E-mail scanned for viruses by Declude Virus] ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
Re: [Biofuel] PH meter calibration
I was wondering if anyone knows what PH the lye water for Titration should read on the ph meter. using the better titration method Um, dunno. Why would that be useful? I have made a good batch of BD using virgin oil, and have made alot of soap with wvo because my meter is off calibration. I am having trouble finding calabration fluid to calabrate my meter. See what the list archives has to say about calibration: http://infoarchive.net/sgroup/biofuel/?keywords=calibrationtime=allu sertime=2002-12-31 Information Archive at NNYTech Best wishes Keith Thank you, Jeremy ___ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
