Pioneer 1 B Vein Graphite

Independent Screening Certificates

• SHOP-LOT-P1B-001 Pass Tested 04/27/2026
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  Screening Certificate

  Issued by Graphitegrade

  ✅

  Screening Certificate USO-2026-0004 · PASS

  Issued 04/27/2026 · Device USO-PP-003 · Pioneer 1 B Mine - Lab A

  Pass

  Lot Number

  SHOP-LOT-P1B-001

  Product

  Pioneer 1 B Vein Graphite (Battery, Ultrafine (≤10 µm), ≥ 99.95 %)

  Source Mine

  Pioneer 1 B

  Lot Status

  Available

  Internal Reference

  P1B-2026-Q2-001

  Origin Country

  —

  Certification Details

  Certificate No.

  USO-2026-0004

  Test Date

  04/27/2026 20:13:15

  Device ID

  USO-PP-003

  Device Validation

  CR2032 ✓ Pre-test

  Location of Test

  Pioneer 1 B Mine - Lab A

  Lab

  USO Independent Screening

  Electrolyte

  0.5 M H₂SO₄ (aqueous)

  Reference Electrode

  Ag/AgCl

  Counter Electrode

  Pt wire

  Scan Rate

  50.0 mV/s

  Diagnostic Signatures

  Quinone/HQ Peak

  Detected

  Carboxyl/Phenol Wave

  Low — Acceptable

  Capacitive Current Index

  1.9

  Peak Reversibility

  Reversible

  Performance Scores

  Electrochemical Homogeneity 8.8/10

  Surface Oxygen Loading 1.6/10

  Defect Density Index 1.8/10

  Peak Reversibility Score 9.3/10

  Classification

  FCE Estimate

  93.0% (predicted)

  Grade Classification

  Battery Grade

  Reference Standard

  —

  Reject Boundary Ref

  —

  Overall Result

  PASS

  Strong quinone peak, low capacitive current. FCE estimate 93%.

  CV Trace

  CV TRACE — 0.5M H₂SO₄ | Ag/AgCl ref | 50 mV/s

  This lot

  Known-good reference

  Lot Specifications

  Graphite Type

  Vein

  Material Grade

  Battery

  Carbon Purity

  99.96%

  ⬛

  Certificate QR Code

  Scan to verify authenticity online
  graphitegrade.com/shop/cert/4