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When was your order?

How are you filtering it?

Does it stay clear?

Are you keeping it warm and if so does it crash or go cloudy when cold?
I placed my order around Thanksgiving time and it arrived about a week and a half ago.

When brewing it, the color appeared to be darker than any orher test raws i have used before and it appeared to be thicker. Using a 22um filter as I have in the past it will begin to filter fine but in a few min its almost impossible to filter. What I got to filter thus far is nice and clear. I heated up the solution and that seemeIMG_20260201_113656_744.webpd to help but again after about 2 min or so I am back to square one.
 
I placed my order around Thanksgiving time and it arrived about a week and a half ago.

When brewing it, the color appeared to be darker than any orher test raws i have used before and it appeared to be thicker. Using a 22um filter as I have in the past it will begin to filter fine but in a few min its almost impossible to filter. What I got to filter thus far is nice and clear. I heated up the solution and that seemeView attachment 377008d to help but again after about 2 min or so I am back to square one.
Did you test it?

How warm are you keeping it, 120F?

Bottle top filter?
 
I am sending a sample for testing this coming week. As far as keeping it warm I do not have anything to keep is consistantly warm. I am using whatman syringe filters 22um pvdf.
Those are your 2 problems, syringe filter and not warm enough.

Test C can take a day to filter cold with just 500ml with a bottle top, it will drip very slow.

Test C is one that needs to stay warm to filter smoothly and still take time.
 
Let me put it this way, using a pump and keeping it at 130F the whole time, pouring a little at a time into the filter, little like 100ml, can take just 500ml 2 plus hours to filter.

It does not filter fast or good cold at all, never has, this batch or a batch 15 years ago.
 
I am sending a sample for testing this coming week. As far as keeping it warm I do not have anything to keep is consistantly warm. I am using whatman syringe filters 22um pvdf.
How did you dissolve it if you don't have anything to keep it warm? This make no sense to me at all unless you did it in boiling water which I would never do.
 
Those are your 2 problems, syringe filter and not warm enough.

Test C can take a day to filter cold with just 500ml with a bottle top, it will drip very slow.

Test C is one that needs to stay warm to filter smoothly and still take time.
do you suggest 30 ml at a time then with a syringe filter?
 
do you suggest 30 ml at a time then with a syringe filter?
Last batch I used 10ml barrels and a new syringe filter for each vial. I only did 200ml but came out looking nice and clear. Maybe over kill but its hard enough filtering by hand I felt like using a fresh filter each time was easier.

Im just brewing for myself or I would get a vacuum setup
 
Last batch I used 10ml barrels and a new syringe filter for each vial. I only did 200ml but came out looking nice and clear. Maybe over kill but its hard enough filtering by hand I felt like using a fresh filter each time was easier.

Im just brewing for myself or I would get a vacuum setup
They do clog up fast, you will go through a few.
 
Last batch I used 10ml barrels and a new syringe filter for each vial. I only did 200ml but came out looking nice and clear. Maybe over kill but its hard enough filtering by hand I felt like using a fresh filter each time was easier.

Im just brewing for myself or I would get a vacuum setup
I think this is the play then for personal use which is my route
 
Today I had success brewing 2025.22.2 date batch, however it was a 45mL test brew.

Filtered warm with a 22 micron 25mm ptfe syringe filter.

Finished vials look as expected, 22bb 1ba in mig 812.

I consider myself lucky, as there were three different reports of this dated batch having issues.
 
Today I had success brewing 2025.22.2 date batch, however it was a 45mL test brew.

Filtered warm with a 22 micron 25mm ptfe syringe filter.

Finished vials look as expected, 22bb 1ba in mig 812.

I consider myself lucky, as there were three different reports of this dated batch having issues.
It's starting to look more and more like in the beginning there was a bad batch, rather it the test c or it mixed with something by mistake.

We will never know with these people refusing to test the raws, making them irrelevant and useless to us.

They had a lot of test c to get out in the beginning, something went wrong at that time.

Speaking only on the test c!
 
How did you dissolve it if you don't have anything to keep it warm? This make no sense to me at all unless you did it in boiling water which I would never do.
I use a warming plate to keep the brew warm. Once everyrhing is dissolved i draw up about 20 ro 30ml into a large syringe. No i do not use boiling water. I have been brewing since 2019 and this is rhe first time I have ever had this issue. It is also my first time getting raws from this place. My norm go to source has nothing since last yr.
 
It's starting to look more and more like in the beginning there was a bad batch, rather it the test c or it mixed with something by mistake.

We will never know with these people refusing to test the raws, making them irrelevant and useless to us.

They had a lot of test c to get out in the beginning, something went wrong at that time.

Speaking only on the test c!
I will be posting my lab test results once rhey are ready. This freakin winter storm we been having here in the midsouth has put the mail into limp mode.
 
Looking forward to it, mine should be ready in a week.
I am going to try again but with a constant heat source to keep the solution warm. As I stated before it starts out great going into the vial all nice and clear and then it slows down to a single drip every few seconds. It will take me.all day just to get one vial done!
 

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