Friday, September 23, 2011

Creating products: Equipment for measuring pH

pH indicators: You can get pH strips from your local supplier, and there always seems to be a great debate about whether or not they are useful. There's always a place for testing your pH in bath and body products, but my experiences with strips have been spotty at best.

I've tried three different kinds of pH strips and none of them made me happy! I didn't feel I was getting an accurate reading on my products. (If you've had a different experience, please share it in the comments.) I've had products that registered as having a neutral pH (around 7) that have registered as 5.5 with my meter!

If you've had good results with the strips, please make a comment! And include supplier information so we can all share in the awesomeness. (But remember, if you're a compnay, please don't write just so you can get your URL listed on the blog! I check every link!) 

pH meters: I love my pH meter, and I won't part with it, but if you can't get one, that's okay. (I make sure all my recipes are pH balanced, so you don't have to!) If you're making a lot of surfactant based products with surfactants that will register as more alkaline - decyl glucoside, for instance - it's not a bad investment. Make sure you get one that is easy to calibrate and doesn't need a ton of replaceable bits, like the tip or strips. And if it can measure temperature, make sure you get it in your local measurement (mine's in Fahrenheit, and I had to get a conversion chart for the workshop).

Here's some information on pH meters!
Calibrating your pH meter
Adjusting the pH of your products
Not worrying about adjusting the pH of your products

Tomorrow I'll address some of the questions that have arisen from the last few posts!


Gabriel said...

Hello again!
I have a question that has been burning in my mind, but I am as of yet unable to find an appropriate answer for it online. Hopefully you can help me out :)

So I have been hearing about how the high pH of my water (very hard water where I live) may be keeping the cuticle of my hair from closing all the way. Many people say you need to use diluted vinegar to help the cuticle close properly so that your hair doesn't dry up.

I have been wanting to make a purely oil-based formulation to use as a leave-in conditioner on my beard, most likely with shea butter and jojoba oil as the main ingredients (possibly whipped).

My question for you, is do you know how low pH will affect oils? Will it make the oils go rancid more quickly?
If not, what kinds of things can I use to adjust the pH of an anhydrous formulation?

Thank you for all the wonderful information you have here, I am learning a ton! I look forward to your response :)

Best wishes,

SGS said...

Hi! Totally loving your helpful blog! Can you tell me what pH meter you use and where you bought it? I've been reading piles of reviews on Amazon and can't seem to find a trustworthy one. Thanks so much.

Susan Barclay-Nichols said...

Hi SGS! Check out this post for more information. I love mine so much!