casek that link you posted to back up your surgel claim basically had a bunch of morons saying that surgel and all that jello shit worked and some medical professionals and those in the know explaining in no uncertain terms why it isnt the surgel at all.
Im quoting, wall of text ahead:
Those that have passed usually are also diluting at the same time they take the certo. Many will mix it into a bottle of gatorade then fill the bottle with water and drink it down, which ends up being about the fluid amount used in dilution.
Certo can also have a slight diuretic effect. Finally, certo contains fruit pectin, which is a form of soluble fiber. I have called the makers of certo, which I think is Kraft, and asked them how much soluble fiber is in a box of certo. All they can tell me is that it has soluble fiber in the form of pectin but they don't know how much (at least the operators for the 800 number didn't have access to that info). In fact, I think the product code is this: 4300029320. See, on the box it says less than 1 gram per serving but there are 64 servings in a box. So that could be anywhere from nearly 0 to almost 64 grams.
Why is soluble fiber important. Your body eliminates most THC metabolites through renal and hepatic elimination (BenDover, that would be your kidneys and liver). Hepatic elimination results in THC metabolites excreted through your feces. Soluble fiber can help prevent these metabolites from being reabsorbed from your feces back into your body. Next, soluble fiber removes bile from your intestine. Your body must then replace the bile so your body pulls cholesterol from the blood to make bile. This process can help make more THC metabolites available for elimination by the liver and less metabolites available for elimination by the kidneys thus less in the urine.
So, most people who pass using certo are probably passing because they are diluting and adding soluble fiber to the dilution process.