Description Net content: 50ml Features 1. High-purity pharmaceutical grade methylene blue, produced in strict accordance with international pharmaceutical standards, ensuring is safe and effective. 2. Precise concentration ratio, convenient for daily use and medical scene application, suitable for a variety of health needs, including treatment and supportive care. 3. Adopt medical-grade packaging design, leak-proof, light-proof, and pollution-proof, ensuring that the product remains in the best condition during storage and transportation. 4. Each batch has passed strict quality inspection and comes with a quality inspection report, so you can buy without worry and use it with confidence. 5. Multiple specifications are available to meet the different needs of families, laboratories and medical institutions, and considerate service helps your health choices. Comments: 1. The manual measurement tolerance is 2-5g. Please don't mind your replacement. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Thank you very much! 3. The SKU color is the color of the product packaging Package includes: 1 * Methylene blue drops