
USP Grade 99% Methylene Blue Powder. High Purity Grade: USP Grade 99% Methylene Blue Powder with verified quality standards. Versatile Applications: Widely used as a colorant in food and beverages for laboratory staining. Free Sample Availability: Free samples of 1-30 grams available for evaluation before ordering. Detailed Quality Control: Each batch includes a detailed COA for quality verification. Fast Delivery Options: Express shipping available within 3-7 days for small quantities. 24-Hour Support: Customer service available via email, Skype, WhatsApp, and telephone. Secure Packaging: Double plastic bag with aluminum foil for 1kg bags to ensure freshness. Long Shelf Life: 2-year shelf life when kept away from sunlight and dry conditions.