Methylene Blue Solution 4%

Methylene Blue 4% Solution — 30 mL

Methylene blue high strength 4% research solution prepared using USP-grade raw material. Supplied in a 30 mL blue glass bottle with a glass pipette and child-resistant dropper cap for laboratory handling.

Product Overview

Methylene blue is a synthetic dye used in laboratory staining and oxidation-reduction studies. Its distinctive blue colour makes it useful for visual observation in appropriate experimental systems.

This product is supplied as a 4% weight-per-volume solution for laboratory research and analytical investigation. Suitability for a particular method, including any required working concentration, must be established by the laboratory.

Common Research Areas

• Biological staining and microscopy
• Oxidation-reduction indicator studies
• Dye behaviour and colour-change experiments
• Analytical method development
• Laboratory identification and visualisation studies

Concentration & Dropper Reference

• Nominal concentration: 4% weight per volume (w/v)
• Per millilitre: 40 mg of raw material
• Per 0.5 mL: Approximately 20 mg
• Per 30 mL bottle: 1,200 mg of raw material
• Observed drop count: Approximately 15 drops per 0.5 mL
• Approximate amount per drop is : 1.33 mg

• Drops per 30 mL bottle : Approximately 900

The supplied dropper was assessed across repeated tests. A bulb draw of approximately 0.5 mL produced an average of approximately 15 drops, equivalent to around 30 drops per mL.

Drop size can vary with liquid level, pipette angle, dispensing pressure and technique. These figures are approximate laboratory references only. The supplied dropper is not calibrated volumetric equipment and should not be used where precise measurement is required.

Scientific Values

• Compound: Methylene blue
• Raw-material form: Methylene blue trihydrate
• Colour Index: C.I. 52015
• Raw-material CAS number: 7220-79-3
• Raw-material molecular formula: C₁₆H₁₈ClN₃S · 3H₂O
• Raw-material molecular weight: Approximately 373.90 g/mol
• Solvent: Distilled water

Product Specifications

• Product: Methylene Blue 4% w/v Solution
• Appearance: Deep blue liquid
• Net volume: 30 mL
• Packaging: Blue glass bottle with glass pipette and child-resistant dropper cap
• Ingredients: Methylene blue trihydrate and distilled water
• Raw-material grade: Supplier-specified USP39
• Raw-material assay: Refer to the relevant supplier batch COA
• Intended setting: Laboratory research and analytical use

Storage & Handling

Keep tightly closed in a cool, dry place away from direct sunlight. Follow the storage conditions and any expiry or retest date stated on the supplied batch label.

Avoid contaminating the solution or pipette. Methylene blue is a strong dye and can stain skin, clothing and work surfaces. Consult the applicable Safety Data Sheet before handling and use suitable laboratory protective equipment.

Important Information

This product is supplied strictly for laboratory research and analytical purposes only.

Not for human or veterinary use. Not for consumption or injection. For research use only.

We do not provide dosage, administration or personal-use guidance. This product is not supplied as a food, dietary supplement or medicine.

Product images are illustrative. Refer to the supplied bottle label and relevant batch documentation for product-specific information.