Ultra-Pure USP Grade Formaldehyde Free Methylene Blue
1 Drop contains 0.5 mg Methylene Blue
3rd Party Analytical Laboratory Verified Levels of Aluminum (Al), Arsenic (As), Cadmium (Cd), Copper (Cu), Mercury (Hg), Lead (Pb), Selenium (Se), Tin (Sn), Zinc (Zn)
See Photos for Certificates of Analyses
Authentic Biopharm methylene blue products are designed with volume indicators engraved on the glass dropper, which is securely sealed within the glass bottle.