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Titrating with Turmeric vs Phenolphthalein
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I did a video this weekend on titrating wvo with Turmeric vs Phenolphthalein.

The color change for Turmeric goes from a nice yellow to a deep red vs. the pink color that Phenolphthalein turns.

Here's the link to the video:
http://www.youtube.com/watch?v=UK6W2Z3rRUQ

Pretty cool stuff!
-Graydon

This message has been edited. Last edited by: Graydon Blair,




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Location: Utah | Registered: October 08, 2004Reply With QuoteReport This Post
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I'm a turmeric fan. When I first got started, the phenolphthalein color change was just too inconclusive for me. Turmeric was easy.
 
Location: Mt Airy, MD | Registered: May 31, 2007Reply With QuoteReport This Post
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turmeric hands down



 
Registered: April 28, 2008Reply With QuoteReport This Post
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I was originally taught how to titrate oil using turmeric, and it has always worked fine for me and my batches. Plus, it's cheap and very easy to find!

Cheers, John
 
Registered: June 17, 2007Reply With QuoteReport This Post
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Vid looks great,Not trying to put a damper on things,but I always blank my ipa first in case it has gone acidic(which my current lot has-not an issue as long as you blank it first)
I premix my tumeric with ipa (run it thru a coffee filter)and store it in a dropper bottle-just add as many drops as colour intensity you want.(blanking of course ,before adding oil).
The good thing with tumeric is it is non toxic compared to phenolphthalein.
 
Location: UK | Registered: October 14, 2008Reply With QuoteReport This Post
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Yep. It's definitely a good idea to blank the IPA.

Someone else mentioned that it'd be cool to test the Turmeric against Phenolphthalein directly to see if there's much of a difference between the two as far as titration solution used.

Looks like I'll have to do another video again. Wink




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Location: Utah | Registered: October 08, 2004Reply With QuoteReport This Post



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That's an excellent video demonstration. Adding the blank titration would make it even better.



 
Location: coldest N.America | Registered: May 03, 2005Reply With QuoteReport This Post
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I enjoyed that video, especially the glance into the camera and "knock yourself out" comment.
Humor aside, good video Graydon.


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Location: Upstate South Carolina , USA | Registered: December 28, 2003Reply With QuoteReport This Post
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Started on turmeric 'cause we could not find any phenolphalein locally, never looked back. Cool vid.


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Location: Bottom tip of Africa, Port Elizabeth | Registered: January 20, 2010Reply With QuoteReport This Post
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so I'm slow to the questions...

what about a comparison to the digital Ph meter?


I switched to turmeric yrs ago...one the the best moves in my BD making career. i was using phenol red..I know not the same as ..phenolphtalein..but so?
its cheap..
its easy to get..any where in the world!!
and it works..


for me unless your checking for soaps in biodiesel..
turmeric is the answer!!

-dkenny

ps forget the rest!!


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Location: RTP, North Carolina | Registered: December 15, 2004Reply With QuoteReport This Post
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I switched from ph meter to turmeric for titrations! turmeric gives very good results and is much faster than using the ph meter. Tom


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Location: Manitoba Canada | Registered: March 24, 2009Reply With QuoteReport This Post
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I always used tumeric right from the start when I saw Graydon Blair's video on titration. What a precise video it is... I see from the sites in the USA that not only is it an excellent chemical
for titration but it seems to be all the rage all over the world in terms of cancer prevention. I was ignorant of this benefit up until today so I'll be putting a bit of it in the occasional curry !!!!! The jar I got for pence would 'last me out' dozens of times if I only used it for titration because I have only used one powder 'dose' in two years of fuel production and I titrate of course every time I make a 175 litre 'batch' of fuel.
Graydon --thanks so much for the sound advice. Regards all in the USA from Mick H in the UK
 
Location: Nottingham in England | Registered: August 01, 2008Reply With QuoteReport This Post



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I used phenolphthalein 5% solution to titrate new corn oil. It worked. What's wrong with using phenolphthalein? It is easily available from Hach Company, in Loveland, Colorado, USA. Hach Co. mailed it to me. Hach sells water testing supplies.
 
Location: Texas | Registered: April 27, 2011Reply With QuoteReport This Post
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quote:
Originally posted by WesleyB:
What's wrong with using phenolphthalein?


Nothing. They are almost identical. There may be a slight interpretation error with turmeric as it goes from yellow, through orange then to red. With phenolphthalein, the color goes from clear to pink. No mistaking the end point. I have always used phenolphthalein in my titrations. I bought a large bottle of the powder from a chemical supply house. Disolve it in 99.9 IPA. I also did a titration comparison between phenolphthalein, turmeric and phenol red. It shows the different points at which each turns color. Phenol red BTW, is NOT what we want to use. I include the pictures, a titration video, and both indicators in my titration kit. Also directions on how to make turmeric indicator for those who do not wish to buy refills from me.
Lastly, turmeric is easier to obtain and cheaper than phenolphthalein. Phenolphthalein is also a carcinogen. HTH Smile


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Location: Sterling Hts. Michigan USA | Registered: October 18, 2001Reply With QuoteReport This Post
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I started using a digital ph meter, but changed to tumeric about 3 years ago (never looked back since)!

I prepared a pint jar of turmeric (premixed & filtered) over 2 years ago (mason jar) and it continues to give reliable results every time (no bad batches)!

Only question I have is how dark do you fine folks triate to? (I usually take it past 'pink grapefruit', to the color of a ripe 'pomegranate'.)

Thanks!!!
 
Registered: August 24, 2006Reply With QuoteReport This Post
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Location: SFBay | Registered: October 27, 2010Reply With QuoteReport This Post
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quote:
Originally posted by Green Gas:
I started using a digital ph meter, but changed to tumeric about 3 years ago (never looked back since)!

I prepared a pint jar of turmeric (premixed & filtered) over 2 years ago (mason jar) and it continues to give reliable results every time (no bad batches)!

Only question I have is how dark do you fine folks triate to? (I usually take it past 'pink grapefruit', to the color of a ripe 'pomegranate'.)

Thanks!!!


Yeah,I wait for the dark red,I blank to dark red also
 
Location: UK | Registered: October 14, 2008Reply With QuoteReport This Post
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quote:
Originally posted by taralec:
quote:
Originally posted by Green Gas:
I started using a digital ph meter, but changed to tumeric about 3 years ago (never looked back since)!

I prepared a pint jar of turmeric (premixed & filtered) over 2 years ago (mason jar) and it continues to give reliable results every time (no bad batches)!

Only question I have is how dark do you fine folks triate to? (I usually take it past 'pink grapefruit', to the color of a ripe 'pomegranate'.)

Thanks!!!


Yeah,I wait for the dark red,I blank to dark red also

Ditto!
Cheers,
Jon
 
Location: Wellington County, Ontario Canada | Registered: February 07, 2008Reply With QuoteReport This Post



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wrong using phenol vs tumeric..well not wrong..both will give good results.but compare costs..
I switched somewhere in 2005..from phenol red..to phenolphthalein..to tumeric..

let's see since 2005 sometime..when I bought the two OZ bag of tumeric for $1.25..I still have about 95%..and it still works..I store it unused and unmixed..

so wrong??no but i'm cheap..the other 2 cost more than that.

-dkenny


'84 bluebird school bus, DD8.2L turbo( 4/2011, the bus tranny has died..Frown 8.23.11 bus driven to scrap yard Frown )
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everything run B100 when its warm enough Smile
 
Location: RTP, North Carolina | Registered: December 15, 2004Reply With QuoteReport This Post
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I don't like turmeric on my eggs, but I like to titrate with it!
Never tried that phenol stuff on my eggs tho.
Bob
 
Location: Western NY | Registered: September 16, 2005Reply With QuoteReport This Post
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