NMN Quality Assurance — Certifications & Batch Testing

Quality Assurance & Certifications

Every batch of Little Ox NMN is independently tested and verified before it reaches you. Our manufacturing facility holds nine international quality and safety certifications.

We believe in full transparency. "high-quality, independently tested" is a claim any brand can make — below is the independent verification that it is true for Little Ox. Every batch of our NMN is tested by a third-party laboratory before release. Our manufacturing facility holds nine active certifications spanning GMP practice, food safety management, HACCP hazard control, ISO quality management, FDA registration, Halal compliance and RoHS conformity.

Batch Testing: Certificates of Analysis

Manufacturing certifications confirm the process is sound. Certificates of Analysis confirm that the specific batch you receive contains exactly what we say it does. These are conducted by independent third-party laboratories on each batch before release.

Certificate of Analysis — NMN Capsules (500mg β-NMN)

Cert No. CTGS2507251060EC · Independent third-party laboratory
95.8%

β-Nicotinamide Mononucleotide Purity

500mg per capsule · Independently verified by accredited third-party laboratory using HPLC analytical methods · Not self-declared

Microbial Safety Testing

Test Method Required Result
Aerobic mesophilic bacteria ISO 21149:2017+A1:2022 ≤100 CFU/g N.D.
Mould & Yeast ISO 16212:2017+A1:2022 ≤100 CFU/g N.D.
Pseudomonas aeruginosa ISO 22717:2015+A1:2022 Absence/g Absent
Staphylococcus aureus ISO 22718:2015+A1:2022 Absence/g Absent
Escherichia coli ISO 21150:2015+A1:2022 Absence/g Absent
Candida albicans ISO 18416:2015+A1:2022 Absence/g Absent

Heavy Metal Testing (ICP-MS)

Metal Safety Limit Result
Lead (Pb) ≤10 mg/kg N.D.
Mercury (Hg) ≤1 mg/kg N.D.
Arsenic (As) ≤2 mg/kg N.D.
Antimony (Sb) ≤3 mg/kg N.D.
Cadmium (Cd) ≤5 mg/kg N.D.

N.D. = Not Detected (below minimum detection limit). ICP-MS = Inductively Coupled Plasma Mass Spectrometry.

Certificate of Analysis — NMN Raw Material (Powder)

Batch ZKHN25022023Z08 · Manufacturer QA certificate
95.8%
Assay (w/w, HPLC)
95.8%
Purity (area%, HPLC)
0.05%
Water Content (KF)
3.3
pH (100mg/mL)

This certificate covers the NMN powder raw material used in manufacturing, confirming high-quality, independently tested specification before encapsulation.

Heavy Metal Testing (AAS)

Metal Safety Limit Result
Lead (Pb) ≤0.5 ppm 0.003 ppm
Arsenic (As) ≤0.5 ppm N.D.
Mercury (Hg) ≤0.1 ppm N.D.
Cadmium (Cd) ≤0.5 ppm 0.004 ppm

Microbial & Solvent Testing

Test Required Result
Total microbial count ≤750 CFU/g N.D.
Coliform Negative Conform
Escherichia coli Negative Conform
Salmonella Negative Conform
Yeasts & Moulds <100 CFU/g Conform
Ethanol (GC) <5,000 ppm 54 ppm
Methanol (GC) <50 ppm Negative

Request the full Certificates of Analysis

Complete, unredacted copies of both certificates are available on request. Email info@little-ox.co.uk and we will send them to you, typically within one working day.

Manufacturing Facility Certifications

The following certifications apply to the manufacturing facility that produces Little Ox NMN products. All have been independently audited by internationally accredited bodies.

GMP Certificate — Intertek
Current Good Manufacturing Practice based on 21 CFR Part 111 (2020) published by the U.S. Food and Drug Administration. Assessed and certified by Intertek — one of the world's leading testing and certification organisations. Cert No. SZ2504G9.
Scope: Manufacturing and sales of nutrition supplements including capsules, tablets, softgel, gummies and oral liquid.
Certified by: Intertek Testing Services
ISO 22000:2018 Food Safety Management System
International standard for food safety management systems, covering hazard identification, HACCP principles, prerequisite programmes and food safety monitoring. Cert No. 290FSMS2500553.
Scope: Production and sales of nutrition supplement products including solid beverages, tablets, capsules, softgel and oral liquid.
Certified by: ZhongTai Union Certification Co., Ltd (IAF/CNAS accredited — CNAS C211-M)
HACCP Certification
Hazard Analysis and Critical Control Points system certification — the internationally recognised food safety framework for identifying and controlling biological, chemical and physical hazards at every stage of production. Cert No. 290HACCP2500369.
Scope: Production and sales of nutrition supplement products including capsules, tablets, softgel and oral liquid.
Certified by: ZhongTai Union Certification Co., Ltd (IAF/CNAS accredited)
ISO 9001:2015 Quality Management System
The world's most widely recognised quality management standard (GB/T 19001-2016/ISO 9001:2015), confirming that documented quality management processes are in place and consistently applied. Cert No. 29025Q12070-07R0S.
Scope: Manufacture of food raw materials including resveratrol; production and sales of nutrition supplements including capsules, tablets and softgel.
Certified by: ZhongTai Union Certification Co., Ltd (IAF/CNAS accredited)
HACCP System Certificate
Hazard Analysis and Critical Control Point (HACCP) System Certification (V1.0). No. 113HACCP2400028. Covers food additives including nutrition supplements.
Certified by: Independent HACCP certification body
ISO 9001:2015 Quality Management System
Certificate of Conformity of Quality Management System No. 08923Q51683R0S. Standard: GB/T19001-2016/ISO9001:2015. Scope: Manufacture of bio-based materials (resveratrol); sales of food additives including nutrition supplements.
Certified by: CNAS-accredited body (CNAS C089-M, IAF/CNAS recognised)
International Halal Certificate — JAKIM Recognised
Certification that the plant extract powders used in our formulations comply with Halal requirements according to Shariah (Islamic Law). Certificate No. SSPY-201318-33718-R1. Recognised by JAKIM (Department of Islamic Development Malaysia) — one of the most rigorous Halal certification bodies globally.
Certified by: ShaanXi Shang Pin Yuan Halal Food & Restaurant Management Co., Ltd (SSPY) — JAKIM recognised body
CE RoHS Certificate of Conformity
Certificate of Conformity (Cert No. ZTS25090910QCHR1) confirming compliance with the RoHS Directive (EU) 2015/863, which restricts the use of specific hazardous materials. Testing conducted to IEC 62321 series standards.
Certified by: Shenzhen ZTS Testing Service Co., Ltd
FDA Food Facility Registration
Registration with the U.S. Food and Drug Administration under the Bioterrorism Act (21 U.S.C. 350d), legally required for all facilities that manufacture, process, pack or hold food for human consumption. Registration ID: 15022913096.
Registered with: U.S. Food and Drug Administration (FDA)

Why nine certifications?

Most supplement brands mention "GMP manufacturing" as a single bullet point. The certifications above represent independent audits by internationally accredited bodies — Intertek (FTSE 100 testing and certification leader), JAKIM-recognised Halal authority, and multiple IAF/CNAS-accredited ISO bodies. These are not self-declared standards. They are audited, renewable and publicly verifiable.

Shop NMN Pure — from £7.99 → Shop NMN Plus — from £9.99 → Compare with other UK brands → What high-quality, independently tested means →

All certifications are currently active. Manufacturer and facility identifying details have been redacted from the versions shown here. Full unredacted certificates are available on request from info@little-ox.co.uk.

Looking to stock Little Ox in your pharmacy, health store or clinic? We supply NMN supplements wholesale to UK retailers. Learn about wholesale enquiries →