Skyline Assayers &
7960 South Kolb Road, 85756, Tucson, AZ, United States
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What this lab is accredited for
We could not match the method references in this lab’s scope to published test standard numbers. The full scope as published is below.
Only this lab. Searches the method, matrix and range of each of the 3 scope lines.
A2LA certificate 2953.01 · 3 lines
| Line | Method | Matrix | Range |
|---|---|---|---|
| 1 | - | RocksShow page textExtracted from the scope document; tables may not line up. View scope for the original. (A2LA Cert No. 2953.01) Revised 10/06/2025 Page 1 of 2
SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017
SKYLINE ASSAYERS & LABORATORIES
7960 South Kolb Road
Tucson, AZ 85756
John “JP” Rosso Phone: 520-622-4836
Jose Bernal Phone: 520-622-4836 ext. 130
CHEMICAL
Valid To: April 30, 2026 Certificate Number: 2953.01
In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform
the chemical tests and assays listed below on ores, rocks, soils, and sediments:
Test/Technology Test Method(s)
Analysis of Samples by:
Inductively Coupled Plasma-Optical
Emission Spectroscopy (ICP-OES)
SOP 460 – Solutions Analyzed by ICP-OES - 24 Elements (TE-6):
Ag, Al, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni,
P, Pb, Sr, Ti, V, W, Zn
Carbon Sulfur Analyzer
SOP 439 – Carbon by Infrared/WR-C;
SOP 467 – Sulfur by Infrared/WR-S
Digestion and Analysis of Samples by:
Atomic Absorption Spectroscopy (AAS)
SOP 401 – Total Copper (Hydrochloric, Nitric, and Perchloric
Acid Digestion);
SOP 403 – Acid Soluble Copper;
SOP 404 – Quick Leach Technique (QLT-Cu Assay);
SOP 405 – SAP (Hot) Ferric Sulfate Soluble Copper;
SOP 406 – Sequential (Acid Soluble Copper, Cyanide Soluble Copper);
SOP 406A – Cyanide Soluble Copper;
SOP 415 – Silver (Ag) by Aqua Regia analyzed by AAS;
SOP 457 – Gold (Au), Silver (Ag), Cyanide Leach;
SOP 462INT – RSCu Client Method
Digestion and Analysis of Samples by:
Inductively Coupled Plasma-Optical
Emission Spectroscopy (ICP-OES)
SOP 407 – Total Copper, Lead, Zinc, Iron, Molybdenum, Manganese,
Nickel, Calcium, Magnesium, and Cobalt (Hydrochloric, Nitric, and
Perchloric Acid Digestion);
SOP 424 – 34 Element Aqua Regia Leach analyzed by ICP-OES (TE-2):
Ag, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, La, Mg, Mn, Mo,
Na, Ni, P, Pb, S, Sb, Sc, Sr, Ti, Tl, V, W, Zn, Zr;
SOP 430 – 24 Element Multi Acid Digestion analyzed by ICP-OES (TE-
4):
Ag, Al, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni,
P, Pb, Sr, Ti, V, W, Zn;
SOP 468 – Acid Soluble Copper and Cobalt 1hr;
SOP 479 – Cu-HF;
SOP 483 – Acid Soluble Molybdenum (Oxide Moly);
SOP 490 – Acid Soluble Copper and Cobalt 6hr | - |
| 2 | SOP 428; SOP 429; SOP 461; SOP 477; SOP 411; SOP 412; SOP 425; SOP 410; SOP 463; SOP 473; SOP 487; SOP 102; SOP 301; SOP 433; SOP 413; SOP 449; SOP 486; SOP 446 | - | - |
| 3 | Extracted from the scope document; tables may not line up. View scope for the original. For the tests to which this accreditation applies, please refer to the laboratory’s Chemical Scope of Accreditation.
Accredited Laboratory
A2LA has accredited
SKYLINE ASSAYERS & LABORATORIES
Tucson, AZ
for technical competence in the field of
Chemical Testing
This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017
General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates
technical competence for a defined scope and the operation of a laboratory quality management system
(refer to joint ISO-ILAC-IAF Communiqué dated April 2017).
Presented this 11th day of June 2024
________________________
Mr. Trace McInturff, Vice President, Accreditation Services
For the Accreditation Council
Certificate Number 2953.01
Valid to April 30, 2026 | ||
Ranges are reproduced from the accredited scope document as published, and only where we found that range printed in the document for the line. Otherwise the cell reads “See scope document”. An absent range means the register did not state one. Line numbers are ours, for cross-reference; they follow the order of the scope document.
Location
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