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-the process is HP -blending time was up until the paste siezed up completely (not sure how long, 10-15min?). -KOH paste. The paste was then cooked for something like 4 hours, with attempts to mix, but ultimately failing due to the thickness (same procedure as with the smaller batch). -Recipe is...

Hello, what size batches do you people usually make, and what size batch was your maximum? Did you experience any mixing problems with size increases? I just made a 7lbs batch and the error is instantly obvious; the top of the paste tests neutral in both tongue test and total alkali test, and...

If I'm not mistaken the worst thing that can happen with using Dunn's method to the T is... ...you end up with a slight superfat (because you overneutralized by a small bit, due to the OH- ions present in the solution from the soap disassociation from the inherently+unavoidably present water).

Watching diligently :)

Seconded. Contains 90% of all you will (probably) ever want to know. Ironically, nothing in the book about what this thread is about :P...unless I missed it, which is unlikely, but could happen. Almost everything else though.

Aye, basically what I'm wondering is where the cleansing value offered by various soap calculators comes from (and possibly how to verify it), if anyone happens to know. Using 100% olive right now and experiencing a squeaky clean feel after showering - usually associated with the more cleansing...

Is there a scientific way of evaluating soap efficacy? I.e. 100% olive soap versus 100% coconut soap in terms of how much oils each one can emulsify and subsequently wash off? The expected answer is that the coconut one is more efficient, but by how much? The answer, as I see it, could be...

The general directions from manufacturers of those high BTU burners are: not for indoor use! I imagine the pesky people who come and inspect the place every now and then to make sure everything is running by the "Good Manufacturing Practices" (ISO 22716:2007) would have a problem with that :D...

They are indeed lacking, but not because I don't want to listen or believe you, but because you simply don't provide an explanation on what the problem is. Person A: red socks ain't good. Person B: Why? Person A: trust me, years of experience. Person B: ... I'm more than willing to learn (its...

Strictly for liquid soap... How does any of this actually relate to "what is the ideal soap temperature/method for adding EO", though? Do we have any evidence that EO mixed into soap at a certain temp. produces a good outcome, but if it gets mixed into it at room temp soap, the outcome is bad...

Volume of fluid to heat in litres: 50 Temperature rise required in degrees C: 75 Power of heating element in kW: 1.5 Calculate time required to heat up to temperature: 174.82517 minutes According to this (http://processheatingservices.com/water-heating-time-calculator/) random calculator...

An interesting point about bearable heat up times, one which I hadn't considered. A 55 gallon steam sterilizer at full capacity (I grow mushrooms) takes like 12 hours to reach 205F with a single 1500W water heating element. It does indeed raise the question how long it would take for the double...

Similar note: Dunn briefly talked about boiling points in this article: http://roberttisserand.com/2011/06/essential-oils-in-soap-interview-with-kevin-dunn/ But I find the notion of avoiding a 204C/399F soap (for lavender, for example) a bit on the funny side. We never really exceed 95C/203F :P.

Part 3: measuring, master batching. It is immediatly evident to me that producing a known-purity diluted KOH/NAOH master batch is indeed a very SAFE as well as time-saving procedure: 1. the less times you weigh something, the less chance of failure 2. less fume inhalation 3. Making 5 gallons of...

If there are any would-be or fully fledged commercial soapers around here, I'd like to discuss equipment and production procedures. The following are my thoughts and findings, feel free to share your own or have a read! I will focus mainly on liquid soap, so there will be some similarities...

I have just finished a minor experiment: Added lavender EO to two 200ml soap samples at a rate of 1% (2ml): -One at 45˙ Celcius soap temp. -One at room temp. soap Result: exactly the same.

Temp of the soap. Forgot about the acceleration thing. Aye, forgot about the acceleration thing. Was completely focused on an answer for LS, to be honest. The scents are probably altered (depending on the compounds/makeup of a particular EO) somewhat if added pre-saponification.

Interested primarily in liquid soaps, but also for bar soap. I imagine the answer is similar anyway.

On page 171 of Dunn's SSM: 1. Add water to 3 flasks, 50ml each. 2. Add phenolphtalein, 5-6 drops, to each flask. 3. Analytically add 10.XX KOH solution/suspect lye to each flask. 4. Add 5ppt or 500ppt (for either 5ppt or 500ppt lye) citric acid solution to the flask until the pink disappears...

So far I've been using grocery store oils and relying on averages. But I plan to switch completely to this supplier, which has batch/lot numbers and analysis for them, yes. PS: any idea what kind of superfat you would be looking at if you simply took the lower end sap value every time? For...