Description Net content: 50ml Features 1. High-purity methylene blue ingredients, strictly quality tested to ensure that safe and effective, suitable for various health needs. 2. Unique drop design, precise and controllable dosage, convenient for daily use and carrying, ideal for health management. 3. Supports a variety of uses, from cell staining to adjuvant therapy, widely used in medicine, biological research and personal health. 4. Environmentally friendly packaging, reducing plastic waste, while protecting product quality, highlighting the dual care for the environment and health. 5. A brand trusted by customers, providing professional after-sales service, answering any questions about the use of methylene blue, so that you can buy without worry. Comments: 1. The manual measurement tolerance is 2-5g. Please don't mind your replacement. 2. Due to the 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