Shilajit Lab Test Results & Certificate of Analysis | Zenbardo

Lab test results: batch 0628228

Zenbardo Himalayan Shilajit Resin is independently tested by Eurofins, an ISO/IEC 17025 accredited laboratory. The results below are from our latest certificate of analysis for batch 0628228, reported on 23 June 2026. All four heavy metals tested are well within UK legal limits for food supplements.

Report details

Product	Himalayan Shilajit Resin
Laboratory	Eurofins (ISO/IEC 17025 accredited)
Eurofins report code	AR-25-IR-047612-01-01
Sample code	258-2026-04002284
Batch number	0628228
Date of manufacture	May 2026
Best before	May 2029
Analysis date	17–22 June 2026
Report date	23 June 2026
Sampling	Sample supplied by Zenbardo in a glass container

Fulvic and humic acid

Test	Method	Result
Fulvic acid	EASI-CHE-SOP-175	80.91 g/100g (80.91%)
Humic acid	EASI-CHE-SOP-175	5.66 g/100g (5.66%)

Heavy metals

Metal	Result	Limit of quantification	UK legal limit (food supplements)	Status
Lead (Pb)	0.21 mg/kg	0.05 mg/kg	3.0 mg/kg	Pass
Cadmium (Cd)	0.03 mg/kg	0.02 mg/kg	1.0 mg/kg	Pass
Mercury (Hg)	0.04 mg/kg	0.01 mg/kg	0.10 mg/kg	Pass
Arsenic (As)	0.47 mg/kg	0.05 mg/kg	No specific UK limit	Pass

Heavy metals were tested using method EASI-CHE-SOP-44. mg/kg is the same as parts per million (ppm).

What these results mean

Shilajit forms in mountain rock, so it naturally contains trace minerals, including small amounts of heavy metals. What matters is that levels are low. Our lead result is around 7% of the UK legal maximum for food supplements, and cadmium is around 3%. Mercury is below the legal maximum. There's no specific UK limit for arsenic in food supplements, but we test for it and publish the result.

These results apply to batch 0628228. You'll find the batch number printed on your jar. A certificate of analysis shows what's in the product. It isn't evidence of any health benefit.

Want to know how to read a lab report? See our guide to shilajit heavy metal testing, or shop Zenbardo Shilajit Resin.