Missing a gram of prop powder?

[TexasPowerHouse]

I just finished up drying the powder from a 5 cart conversion using D's complete kit. I used these directions -

http://forum.bodybuilding.com/showth...40#post1492440

and followed them almost exactly. The only difference is that I used a Home Depot painter's hat for the filtering and rinsing. I also didn't use an oven to dry the powder. I let it sit for 4 days to air dry. Anyway I only ended up with 8 grams of powder. I weighed it with a Lee's Powder Scale. Do you think the painter's hat let some of the test through it when I was rinsing? I mean 1 gram is quite a bit to lose. I'm sure none spilled during the conversion. What will the mg/ml be with only 8 grams of powder? I'd like to figure out where I went wrong for future reference. Thanks in advance.

[spidey]

I have extracted synovex 2 or 3 times and every time it was a little short, but not 1g out of 10!

I am usually short about 50 to 100mg out of 20g. I think they slightly underdose their product.

With fina, I have always gotten a little more than theoretical. There is supposed to be 20 grams tren ac in a box of fina and I always get 20.05 to 20.1 grams.