BOLIVIA · UNIVERSIDAD TÉCNICA DE ORURO
Spectrolab, the chemical laboratory of Universidad Técnica de Oruro, assayed vegetable charcoal (carbón vegetal) produced in Santa Cruz. These are signed Informes de Ensayo — not marketing sheets. The 89.73% fixed-carbon figure on the site comes from report N° 36914.
INFORME N° 36914 · AUGUST 2016
Sample received 9 August 2016. Assay 10 August 2016. Laboratory code 4454, Tequilo 1. Ash, volatile matter, and fixed carbon reported on a dry basis.
INFORME N° 36642 · MAY–JUNE 2016
Two-page assay, laboratory code 3142. Ash 3.05% and moisture 2.76% on page 1. Metals by EPA methods on page 2. Cadmium and lead were below the detection limit. Values below are transcribed from the signed reports; the scans are the source.
| Parameter | Method | Result |
|---|---|---|
| Ash / Cenizas | Dry basis | 3.05% |
| Moisture / Humedad | — | 2.76% |
| Arsenic (As) | EPA 7062 | 2389.395 mg/kg |
| Calcium (Ca) | EPA 7140 | 0.91 mg/kg |
| Cadmium (Cd) | EPA 7130 | < 0.01 mg/kg |
| Mercury (Hg) | EPA 7471 A | 0.008 mg/kg |
| Magnesium (Mg) | EPA 7450 | 0.03 mg/kg |
| Lead (Pb) | EPA 7420 | < 0.1 mg/kg |
| Potassium (K) | EPA 7610 | 0.12 mg/kg |
| Sodium (Na) | EPA 7770 | < 0.03 mg/kg |
ORIGINAL DOCUMENTS
Issued in Oruro, Bolivia. Signed by T.S. Rosmery Torrez Y. (Supervisor), Ing. Jenny A. Espinoza Z. (Laboratory Chief), and Ing. Rosario Mena de Bascopé (Quality Control). Client on the reports: Young Jae Shin, Santa Cruz. Sample description: carbón vegetal.
