Bobzchemist
Forum Replies Created
-
Can you use ethanol?
-
Mineral oil will probably work, as will various other hydrocarbons. What are you trying to dissolve in your solvent?
-
Pressure homogenizers used for dairy products are a completely different animal from the rotor/stator homogenizing mixers used in cosmetic manufacturing. Running one under vacuum isn’t needed for cosmetics.
It’s difficult but not impossible to make a stable emulsion without a homogenizing mixer. I wouldn’t want to run a cosmetic formulation lab without one - but you could if you absolutely couldn’t afford one.The most popular lab homogenizer is a Silverson. Very similar mixers are made by Ross. Somewhat comparable mixers are made by Gifford-Wood, Arde-Barinco, Admix, IKA, Scilogex, and various Chinese manufacturers. -
Trehalose has an amazing marketing story from Selaginella (sometimes called the resurrection plant) drying out and coming back to life.
Cargill also makes it: http://www.cargillfoods.com/emea/en/products/sweeteners/specialty-sweetener-trehaloses/index.jspAnd there’s a fun spanish/english pun in there somewhere regarding a signature phrase from the Three Stooges, but you have to have a warped mind (like mine) to appreciate it… -
It’s in their literature somewhere, but what you need to do with any versagel is to open up/relax the block polymer chain so that other oils incorporate properly. If I remember correctly from the patent and using it several years ago, this involves heating to 230 - 240F or higher, then a slow cooldown while stirring.I found this from a quick search. I have no idea if it works or not:
-
I’ve used various kinds of tube sealing machines. The manual, semi-automatic and small automatic hot press machines are a pain to use and clean, difficult/temperamental to set up, and rarely produce a clean, professional looking seal.
In fact, I’d appreciate more information on this service for some of our products.I can see two or three types of users for something like this. First is a small user who doesn’t have their own sealers. Second is a medium-sized outfit looking for a more professional look, and third would be a larger customer who needs small runs for some of their products.I’m not sure if the flat-rate pricing would be helpful or not. -
95% of the time, we don’t sterilize packaging for production.
-
Please start a new discussion
-
250? That’s not even a pilot batch. I don’t know if even the private label folks will talk to you about quantities that low.
-
Cyclomethicone
-
Same here. IPA or Ethanol if we’re worried about sterilizing packaging, Alcanox and an ethanol rinse for equipment.
-
You would have to contract with a testing lab seperately to analyze the chemical leaching into your product. It’s not cheap to do this - if this is a large concern, most folks would simply use glass packaging so that they didn’t have to worry about it.
-
Since you’re working in a commercial facility, be aware that Ultrez 20 has advantages in production that won’t be apparent in the lab. It takes much less time to properly hydrate Ultrez 20, but in the lab, you might only save 10 or 15 minutes - in production, when making a large batch, you could save hours and hours of time and/or headaches, not to mention easily avoiding the dreaded “fish-eyes”.
So, you have to ask yourself (and your management) “How much is an hour of production time worth?”. In a lot of manufacturing facilities in the US, being able to save just an hour or two of production time when making a batch is worth many times the cost of using Ultrez 20 over Carbopol 940 - but it’s different for every factory, so you should check first. -
This brings up a good point about duping formulas. One of the first things that you should do, after determining the 1% line, is look for ingredient combinations that are available commercially. More and more formulators seem to be using pre-mixes like Kerabase, or Incroquat OSC from Croda, etc.This keeps you from trying to source individual components, and may also make it much easier to reverse-engineer.
-
Vacuum tubing, power cord and switch, beakers, etc.
-
Filter with activated carbon and/or silica.
But honestly, the easiest thing to do is just to reduce the amount of the extracts to 0.001% or lower. They don’t actually provide any benefits. -
I think sodium citrate is your only option for a powder.
-
You MUST start a new discussion in order to receive any answers to your questions.
-
Brookfield is the right choice.
-
Also, which carbomer are you using? There are quite a few.
-
“Best” is such a vague question. Do you want cheapest? Most versatile? Most accurate? Most commonly used?