How to Choose Right Syringe Filters and Filter Membranes

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The texture of syringe filters include Nylon, PVDF, PTFE, MCE, CA, Glass Fiber, PP, PES.

When choosing the texture of syringe filters, we need to consider pore diameter, chemical resistance( if can resist all carrier oils and solvents), oil-based or water-based solution, and etc.

Here are the pore diameter of common syringe filters.

Pore diameter:
Nylon, PVDF, PTFE, MCE, CA, PP, PES: 0.22um, 0.45um
Glass Fiber: 0.7um, 1.2um

Here are some common questions we enounter when choosing proper syringe filters?

1. Is it necessary to have a 0.22 um to have a sterile solution or the 0.45 um gives acceptable results concerning the dangers of bacteria ?

2. What is the average filtering time per 100ml oil-based injections and water-based injections? What carrier oil you use?

3. Warming your injection will make filtering much easier. What is the filtering time difference between warmed and unwarmed oil?

4. Which membrane are the best for a steroid based solution? Oil-based and water-based.

Here is the chemical resistance chart of Whatman syringe filters/filter membranes.

Nylon PVDF PTFE MCE CA Glass Fiber PP PES
Benzyl Alcohol LR R R R LR R R NR

R=Resistant
LR=Limited Resistance
NR=Not Resistant

I would like to answer the above questions with my shallow expertise.

1. 0.22 um is used for sterilizing-grade filtration. Literally speaking, getting rid of bacterials. 

0.45um is used for clarification filtration and pre-filtration. Always stick to
0.22 um though more time-consuming. I want to correct my words in the past posts.
4. Just considering the pore diameter, Glass Fiber is out of the game. Then comes to chemical resistance, Nylone, CA, and PES are out of the game too. So the rest
options might be good for use: PVDF, PTFE, MCE, PP. But deeper consideration is: would these syringe filters not be eaten by other solvents(like BB, EO, guaiacol,
PS80), even carrier oils? As far as I know, sesame oil eats PES.

0.22 um of PVDF, PTFE, MCE, PP are good for use. But it is a open proposition.

Nylon: Nylon
PVDF: Polyvinylidene Fluoride
PTFE: Polyfluortetraethylene
MCE: Mixed Cellulose Ester
CA: Acetate Cellulose
Glass Fiber: Glass Fiber
PP: Polypropylene
PES: Polyether Sulfone

Superb Premade Trenbolone Oil Parabolan 50 Mg/Ml With Long Half Life For Bodybuilding

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Parabolan Description

Parabolan is the brand name and trade name for the anabolic steroid Trenbolone Hexahydrobenzylcarbonate, commonly and informally abbreviated as Tren Hex or Trenbolone Hex. It is a longer acting esterified variant of the anabolic steroid Trenbolone, which is the most popular in the form of Trenbolone Acetate (a much faster acting esterified variant of Trenbolone). The Hexahydrobenzylcarbonate ester extends Trenbolone's half-life to the extent of approximately 14 days rather than 3 days, which is the half-life of Trenbolone Acetate.. Parabolan is a super steroid in the steroids 'world'. It is a strong anabolic and androgen, five times more potent than testosterone.

Trenbolone Hexahydrobenzyl Carbonate Parabolan 50mg/mL Recipe for 100mL:

5 gram Trenbolone hexahydrobenzyl carbonate powder
2mL BA
20mL BB
74.25mL Oil

Effective Dose (Men): 300-500mgs/week
Effective Dose (Women): Not recommended
Active life: 5-7 days
Detection Time: 4-5 weeks
Anabolic/Androgenic ratio: 500/500

Parabolan Dosage

Parabolan has a half-life of 8-10 days, the longest out of the Trenbolone derivatives. Dosage is dependent on your previous experience with anabolic steroids and desired results. For health's sake, the recommended amount of Trenbolone Hexahydrobenzyl carbonate Parabolan dosage is no more than 400mg once per week for 8-12 weeks.

Stacking Trenbolone Hex (parabolan) can be a bit tricky, as most guys are using it for cutting. The best way is with a EOW (every other week) injection of a longer ester chain like testosterone cypionate, combined with EOD (every other day) injections of testosterone propionate. This allows for an interesting mix of testosterone and trenbolone build up in your system.

Parabolan 50 Cycle

Beginner Parabolan Cycle

Beginner Parabolan cycle example (12 weeks total cycle time)
Weeks 1-12:
- Testosterone Cypionate at 500mg/week
- Parabolan (Trenbolone Hexahydrobenzylcarbonate) at 228mg/week

Intermediate Parabolan Cycle

Intermediate Parabolan cycle example (14 weeks total cycle time)
Weeks 1-14:
- Testosterone Enanthate at 100mg/week
- Parabolan (Trenbolone Hexahydrobenzylcarbonate) at 350mg/week
- Equipoise (Boldenone Undecylenate) at 400mg/week
Weeks 1 - 6:
- Dianabol (Methandrostenolone) at 25mg/day

Advanced Parabolan Cycle

Intermediate Parabolan cycle example (12 weeks total cycle time)
Weeks 1-12:
- Testosterone Enanthate at 100mg/week
- Parabolan (Trenbolone Hexahydrobenzylcarbonate) at 500mg/week
- Primobolan (Methenolone Enanthate) at 1,000mg/week
Weeks 1 - 6:
- Oral Winstrol (Stanozolol) at 50mg/day

How To Judge If the Steroid You Get is Qualified.

Many people are bothered of having no way to identify whether the steroid get is qualified. And do not dare to begin a new source.


Here I introduce somways for you. You can choose the way which is suitable for you.

No.1 Do Labmax test. But this can only show you the thing you get is what it claimed to be. However, it is not able to show the quality of the steroid at all.

No.2 Do Mass spec or HPLC. But many do not have the access to a lab test and it is kind of expensive and takes time. Not practical for most clients.

No.3 Do Bloodwork Test. Most would think this is the best way to figure out the products good or not. And it's not hard or costly for most steroid users. It shows those numbers very clearly. Except some exceptions and different reasons influence the result of bloodwork test is a relatively good way to show is the steroid qualified.

But there are other ways to know or feel if the steroid is good.

One can feel the change on their body while taking steroid. For example, when do testosterone cycle ,one may feel as the days went on, arms, chest legs all were staying pumped like just did a total body super-set ,or for those during bulking cycle, they may feel getting some nice pumps, great workouts, and seems like weating a lot more too. Also very obviously weight ups.

For the others, side effect might also be a good sign. Let's take Trenbolone Acetate as an example. Some may suffer serious bad sides of trenbolone such as severe tren cough , tren-sweats , Insomnia. Increased aggression and irritability. However,for some people,the side effect might be not as obvious as the others get. One may suffer from one or two sides rather than all. So side effect is not able to be the only reason to make sure weather the steroid you take is good or not.

If one doesn't or is not able to do any test, then the easiest way is to find the changes of your body as well as the good sign of certain side effect.


We promise what we serve are 100% as we said. Once be our client, one will definitely reorder from us and become our regular customers.

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Homebrew: What Caused Cloudy Gear

We promise that the products we serve are 100% as we said. If you think it is troublesome to home brew, we can also do this for you, cooked well, and provide the filters, the only step left for you is to filter them. 

Want to know details, pls do not hesitate to contact us. 

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email: selina@ycgmp.com

There are some brewers, especially new home brewers get the cloudy gear after finishing all the process. First they get the clear steroid gear, but after set up for a while, the gear turned cloudy. This mostly happened on Tren ace,test E , test cyp, sustanon. 

The cloudy gear make brewers confused. Some people doubt that the raw powder they get is pure quality. But is that true ? Of course not all the steroid raw powder from different suppliers are in good quality, sure low quality raws could be the reason. However, are there any other reasons cause the problem ? And when issue like that happened, can the cloudy oil still ok to be used ? or what we can do to make the oil clear ?

Recently, one customer who has been order from us for four years also met this problem, the cloudy gear never met before. Although he trust us, but he tried before contact us, no solution found, so he tested the raw powder, the results showed top quality. Then he contact us for help, then the cloudy gear was caused by the filter he used. So here I list some reasons that caused cloudy gear. Hope it will be helpful for you.

What caused cloudy steroid gear

1.Water mixed with the ingrediants from using a water bath to heat during the brewing process might cause cloudiness.

2.Part of the hormone doesn’t dissolve totally.That’s why stir is necessary while brewing.

3.Issue of the ratio of BA / BB ,the scale do not work well ,this can’t be ignored.Though these might be rarely happen ,but it is possible .Since we are human ,and human make mistake.

4.Low room temperature or big temperature difference soon after brewing it.Do not put the oil you just brewed in the fridge .Let it set in room temperature for at lest 24 hours.

5.the quality of the filter that used. Some filter would be partially dissolve with BA/BB and when it mixed with the oil ,it cause cloudiness .And it couldn’t be resolved by heating.

How to avoid cloudy gear

1.Keep the temperature stable ,especially for fresh made batches.Use good quality filter. Be more careful if you use water batch brewing method.

2.Heat the products a little ,sometimes it turns clear.Even it turns cloudy again ,it means the oil is good and can be used.

3.Reheat it to a temperature about 200f, hold this temperature for 10-15 minutes stirring gently. This method would be useful if cloudiness cause by the stream.

4.Add a tiny EO if cloudiness caused by partial undissolved hormones.