Test C Powder Turned Yellow When Mixing BB In

Biggness

New Member
I would greatly appreciate some input on something that is two parts my fault, and other parts unknown at the moment.

I was asked to brew some 750ml of Test E at 300mg/ml for a friend a few days ago since I have a few brews under my belt, with the payment being that I can keep some for myself. I told him everything to order and then once it was all in he dropped it off at the house.

When I started mixing the BB (13%/100ml) into the raws, it took on a yellow color, and wouldn't hold all of the the powder in the solution. I stirred and stirred and stirred and it wouldn't all 100% dissolve, and was a thick waxy-like consistency. I added a small bit of heat and it helped a little, but still not fully dissolved.

That's when I checked with him and find out that he actually ordered Test C without letting me know. Since I only had enough BB for Test E, that was a bit of a problem.

I decided to just see what I can do with what I have and finish the brew. I add the BA and the MCT oil, then filter through a 0.22 filter. It actually looks "good" now, and is holding without crashing. There was a bit of raws leftover in the filter, but not all that much. I am going to weigh it once it's dried out and get a rough idea of the weight that was lost due to it.

My questions are:

1) Is there any cause for concern with the yellow color at the beginning? It wasn't yellow prior to starting the process and was stored properly. I used MCT oil, so no color from the carrier added either.

2) Can someone help me with my math for the concentration? I had a brainlapse when adding the MCT because I was so preoccupied with the yellow color and it not fully mixing that I added 750ml of oil instead of the 451.5 ml it called for.

I used 750ml of MCT, 245g Test C, 7.5ml BA, and 100ml BB and ended up with approximately 900ml of finished product. What is the mg per ml now, accounting for the lost raws in the filter?

I know it's a lot, and I apologize, but any and all help will be greatly appreciated!99281A60-6F7F-4312-BA2F-8F922E225703.jpegCA26B008-1425-4234-B167-12B0A53BF5AD.jpeg5886D6A1-B2C9-42B1-96A5-68ECDF4D40EF.jpeg09F580B7-F22F-4A67-87A4-59A12AA27911.jpegF7E17A2C-30DC-459C-977A-D89A1AA641F4.jpeg
 
Yellowish color, no big reason for concern.

Concentration? Lol. Who fucking knows. Your not going to "dry" out all that oil and then weigh it... if it were me, I'd get more bb, take oily powder out of the filter, and do some math. I hope you wrote down what you added in there. Pick 1.5x the finished volume you wanted to end with, 750 x 1.5 = 1125ml. Figure out how much of bb, ba and oil you should have added to make that volume. Then add it back in to what you already mixed along with the oily leftovers. It'll leave you with approx 200mg/ml. Have fun w that!!
 
DO NOT USE PES MEMBRANES OR PES BOTTLES/BOTTLE FILTERS WITH BB/BA!!!

First off in the last picture you can see the contents of the bottle on the right is a lot less clear compared to the other bottle, well that's because it has dissolved plastic in it and BOTH are like this, but the one the right must have had more exposure so more dissolved PES.

You will need to refilter everything into a sterile glass media bottle and you will need to use either a nylon, pvdf or ptfe membrane and the plastic housing should be made from polypropylene and NOT polyethersulfone.

As for the mg/ml there's no real way to be absolutely sure without sending for testing.
 
DO NOT USE PES MEMBRANES OR PES BOTTLES/BOTTLE FILTERS WITH BB/BA!!!

First off in the last picture you can see the contents of the bottle on the right is a lot less clear compared to the other bottle, well that's because it has dissolved plastic in it and BOTH are like this, but the one the right must have had more exposure so more dissolved PES.

You will need to refilter everything into a sterile glass media bottle and you will need to use either a nylon, pvdf or ptfe membrane and the plastic housing should be made from polypropylene and NOT polyethersulfone.

As for the mg/ml there's no real way to be absolutely sure without sending for testing.
Yeah, I didn't even notice the type of filter.
 
Yellowish color, no big reason for concern.

Concentration? Lol. Who fucking knows. Your not going to "dry" out all that oil and then weigh it... if it were me, I'd get more bb, take oily powder out of the filter, and do some math. I hope you wrote down what you added in there. Pick 1.5x the finished volume you wanted to end with, 750 x 1.5 = 1125ml. Figure out how much of bb, ba and oil you should have added to make that volume. Then add it back in to what you already mixed along with the oily leftovers. It'll leave you with approx 200mg/ml. Have fun w that!!

So the yellow coloring at the start of mixing is no cause for concern whatsoever?
 
DO NOT USE PES MEMBRANES OR PES BOTTLES/BOTTLE FILTERS WITH BB/BA!!!

First off in the last picture you can see the contents of the bottle on the right is a lot less clear compared to the other bottle, well that's because it has dissolved plastic in it and BOTH are like this, but the one the right must have had more exposure so more dissolved PES.

You will need to refilter everything into a sterile glass media bottle and you will need to use either a nylon, pvdf or ptfe membrane and the plastic housing should be made from polypropylene and NOT polyethersulfone.

As for the mg/ml there's no real way to be absolutely sure without sending for testing.
Much appreciated, man!

I wasn't aware of that. I've always used what you've mentioned not by being aware, but by luck of availability. When I gave him the list of stuff to get, he just picked these up.

So filtering properly will save this brew and be safe for use?
 
So the yellow coloring at the start of mixing is no cause for concern whatsoever?

No concern at all.

Much appreciated, man!

I wasn't aware of that. I've always used what you've mentioned not by being aware, but by luck of availability. When I gave him the list of stuff to get, he just picked these up.

So filtering properly will save this brew and be safe for use?

Yes and best to remove from plastic bottles and store in glass jars for now. Warm the oil before filtering again.
 
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