www.ureasample.com spend the 50 bucks...I have used it 3 times, never had problem on federal tests.
RICVAGANAJASMOKER Reviewed by RICVAGANAJASMOKER on . FAILED TEST!NEED ADVICE WELL GUYS, DON'T USE Q CARBO 32! TEST CAME BACK POSITIVE. ANYONE HAVE ANY OTHER SUGGESTIONS.DILUTION? PLEASE HELP! DOES ANYONE KNOW IF VINIGER WORKS? Rating: 5