Independent Scientific Analysis on 14 Popular
Tribulus Products.
Sample Preparation and Analysis Conditions :
For protodioscin,
a weighed portion of a composite of capsule contents or ground
tablets from each sample was dissolved/extracted in 20% acetonitrile,
filtered, and then analyzed under the following instrumental conditions:
Chromatograph : High
performance liquid chromatograph (Hewlett Packard Model 1090 II
/ L)
Column : Synergi
Hydro-RP, 150 x 3.0mm, 4ƒÊm, 80A
Detector : Photodiode
array, scanning from 190 to 600 nm; quantitation at 200 nm or
210 nm
Testing Lab: San Rafael Chemical Services, UTAH, USA
Test Date: 12/06
Note: These test results were performed to educate consumers
so they are aware of what is available on the market. Rest assured
Powerzone Nutrition uses the highest grade materials so you actually
do get what you pay for.
Test results are totally independent, not a paid endorsement as
other companies have arranged with major testing labs! Protodisocin
is the active ingredient in Tribulus that makes all the difference
to the results you get the fact is high quality tribulus extract
with high levels of Protodioscin is expensive this is why many
companies use the cheaper material.
Click
the links below for the larger images.
Brute Force II was the clear winner across the board for mgs per/gm,
mgs per capsule and
mgs per serve!
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