Why Purity Is Critical in Methylene Blue
Industrial and reagent-grade Methylene Blue can carry heavy metals, synthesis by-products, and chemical residues from production. When used in health applications, aquaculture, or research, these impurities are not just undesirable — they compromise safety and efficacy.
USP-grade certification is the gold standard. It means our powder has been independently tested to meet or exceed the purity thresholds set by the United States Pharmacopeia — the same standards applied to pharmaceutical-grade compounds.
USP Grade Specification
Meets the United States Pharmacopeia standard for identity, assay, and impurity limits — the same grade used in pharmaceutical manufacturing.
ICP-OES Heavy Metals Panel
Inductively Coupled Plasma Emission Spectroscopy — the most sensitive analytical method for trace metal detection, conducted at sub-ppm levels.
Batch-Level Traceability
Every production batch has a unique ID. Each batch is tested individually, not sampled from a master lot — you verify the exact batch in your hands.
Independent Third-Party Lab
Testing is not done in-house. An externally accredited analytical lab produces every report — completely independent of CZTL.
Lab-Certified. ISO/IEC 17025:2017 Accredited.
Our Methylene Blue is tested at Centricor Analytical Labs — a globally recognized, accredited testing facility. Every certificate carries formal technical review and sign-off by the Laboratory Director.
15 heavy metals tested per batch — arsenic, lead, mercury, cadmium, barium, cobalt, molybdenum, tin, antimony, nickel, selenium, thallium, vanadium, and more. All below 1 ppm detection limit.
ICP-OES methodology is the gold standard for multi-element trace analysis, providing parts-per-billion sensitivity with simultaneous detection across all metals.
Formal approval process — every report undergoes senior scientist review and Laboratory Director sign-off before release. No auto-generated or unreviewed results.
ILAC-MRA & PJLA recognized — the lab's accreditation is globally accepted, making our certificates valid for international regulatory and compliance purposes.
Digested sample analysis — samples are quantitatively digested before analysis, ensuring complete dissolution and accurate measurement across the entire sample matrix.
Results compared against blanks and calibrated standards of known analyte concentration — no estimation, no interpolation.
Download Lab Certificate by Year
We publish the official third-party certificate for every year. Select the year to review and download the full lab report PDF.
Certificate of Analysis
Heavy Metals Panel · USP Grade Methylene Blue Powder
Please select a year to download the certificate.
What's included in each certificate
Project & Sample Information
Batch number, sample ID, project lead, approver, and date of finalization — fully traceable to a specific production lot.
Complete Heavy Metals Panel
Results for all 15 analytes with both the measured result (ppm) and detection limit — including arsenic, lead, mercury, cadmium, cobalt, nickel, and 9 more.
Methodology Statement
Details of the ICP-OES method, sample digestion procedure, and calibration standards used — full scientific transparency.
Lab Accreditation Details
Centricor's ISO/IEC 17025:2017 accreditation number, certificate number, and ILAC-MRA recognition — verifiable independently.
Director Sign-off
Approved and signed by Michael Flournoy, Laboratory Director — not auto-generated, not self-certified.