LGOP528
Member
Looking more into, I think you are right. I appreciate it!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Luka Halotestin, et al.,I really struggled to get it right and I wanna save people looking for the recipe some time so they don't have to go through all posts.
This is the recipe for 30 ml at 200 mg/ml:
1) Weigh out 6 grams of Reduced Glutathione powder and pour it in your mixing beaker.
2) Add around 20 ml of Bacteriostatic water and start mixing (I prefer magnetic stirrer).
3) After a couple of minutes a milky cloudy solution will form. To get it to completely dissolve you will need to increase te pH of the solution.
4) Add NaOH pellets or NaOH solution to your mix. Add it very slowly, ml by ml or a couple of mg by couple of mg. If you get the pH above 6.5 it will oxidize instantly turning red and ruining your product. Having a pH meter is a life saver. The solution will start clearing up before 4.0 but I like to keep my brew between 4.5 and 4.9.
5) Once you've achieved your desierd pH, the solution should be crystal clear.
6) Add bacteriostatic water up to 30 ml and mix for another 5-6 minutes.
6) You can now filter your solution into a vials through 0.22 micron filter (I prefer Nylon66).
7) Once you've done you should store your Glutathione. If you are going to use it in the next 1-2 months you can store it in the fridge under 5 degrees C. If you are not going to use it soon then you should put it in the freezer and unfreeze it when you are ready to use it.
Are you checking the PH? I just added a little at a time until it was about 7. It moves quickly with sodium hydroxide.Luka Halotestin, et al.,
Do you happen to know how much Sodium Hydroxide you using in mg/mcg to achieve your 30ML at 200mg/mL? I'm trying to figure out a strange issue with mine crashing after about two week. I believe I'm not using enough SH to keep it suspended properly.
I was unable to check the PH at that time but absolutely will this next batch. It was 100% crystal clear upon initial preparation with just 500mcg of SH. This lasted for nearly two weeks (refrigerated) then suddenly crashed with particles and settlement on the bottom of the vial.Are you checking the PH? I just added a little at a time until it was about 7. It moves quickly with sodium hydroxide.
I had the same experience as the OP, it started to clear up at about a 4 PH. Did you have any PIP from it?I was unable to check the PH at that time but absolutely will this next batch. It was 100% crystal clear upon initial preparation with just 500mcg of SH. This lasted for nearly two weeks (refrigerated) then suddenly crashed with particles and settlement on the bottom of the vial.
Yes, slight PIP and a little swelling.I had the same experience as the OP, it started to clear up at about a 4 PH. Did you have any PIP from it?
Pretty sure PH is your issue. I am finishing up my first batch and it has been very smooth.Yes, slight PIP and a little swelling.
I'm sure you are correct. Do you know about how much SH you used?Pretty sure PH is your issue. I am finishing up my first batch and it has been very smooth.
I don’t. I just watch the PH meter. Definitely give it some time to settle. Made another batch last night and over shot this one also. 7.5 this time if I keep doing this, we are going to find out my threshold for too high of PH. lolI'm sure you are correct. Do you know about how much SH you used?
I've brewed 60mL of 200mg/mL a couple times and I use 13-15 mL of 10% solution. So about 1.3-1.5 grams.I'm sure you are correct. Do you know about how much SH you used?
Do you make your own 10% solution? I got a burette and then just decided I would cut corners. Now I am reconsidering it.I've brewed 60mL a couple times and I use 13-15 mL of 10% solution. So about 1.3-1.5 grams.
Yeah I do with distilled water. It has to be filtered anyway so no need for anything special imo.Do you make your own 10% solution? I got a burette and then just decided I would cut corners. Now I am reconsidering it.
Just curious... is anyone buffering with sodium bicarbonate instead of sodium hydroxide?
Just reading through this thread. This bubbles are just carbon dioxide is being released when neutralising acids with a bicarbonate salt. It’s safe and normal. Sodium hydroxide is more dangerous to work with so you can just use more bicarbonate to increase the pH.
