Research materials. Clear documentation.
Explore gum turpentine, methylene blue and Lugol's iodine for laboratory and independent research use.
Our published COAs present supplier-reported source data. PureSource has not carried out third-party testing.
PureSource Blue 4% is a high-concentration research-grade methylene blue solution — four times the strength of standard 1% solutions available elsewhere. Produced in small batches to ensure purity, consistency, and traceability. Formulated using USP-grade methylene blue dissolved in distilled water with plant-derived vegetable glycerin for stability and handling.
Strict quality controls at every stage. Raw material tested to USP pharmaceutical grade elemental impurity limits for arsenic, lead, cadmium, and mercury. Full specification data available in the Certificate of Analysis. Supplied in a 50 mL cobalt blue glass bottle with integrated dropper for light protection.
Ingredients: USP-grade Methylene Blue (4% w/v), Distilled Water, Vegetable Glycerin.
No additives. No formaldehyde. No alcohol. No preservatives. COA verified. EU origin.
For laboratory and independent research use only.
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Why is PureSource Blue different?
✓ USP-grade raw material
✓ COA verified
✓ Heavy metal specification data
✓ Batch traceability
✓ EU origin
Learn more:
Lugol's iodine solution prepared from elemental iodine (I2) and potassium iodide (KI) in purified water. Supplied at 3.0% w/v I2 concentration (approx. 1.5 mg per drop) in a 50 mL amber glass bottle with dropper. Sourced from an ISO 9001 certified UK supplier. Heavy metal tested. No additives, no alcohol, no preservatives. COA verified with full batch traceability. EU origin. For laboratory and independent research use only.
Steam-distilled gum spirits of turpentine from pine resin, according to the source documentation. Supplied in a 50 mL green glass bottle. For laboratory and independent research use only. Not for ingestion or medical use.
The published Certificate of Analysis presents supplier-reported results for the source material. PureSource has not carried out third-party testing.
Request the Safety Data Sheet (SDS)
Turpentine is flammable. Read the product label and Safety Data Sheet before handling.