| EPO 1 | Retail Computing Scales | 2025-04 |
| EPO 5 | Prescription and Jeweler Scales - Part 1 Electronic | 2014-09 |
| EPO 5 - Appendix A Table 1 | Prescription and Jeweler Scales - Table 1 Units of Mass Conversion Tables (1) – Carat (Metric) to Grams (Excel File) | 2014-09 |
| EPO 5 - Appendix A Table 2 | Prescription and Jeweler Scales - Table 2 Unit of Mass Conversion Tables – Pennyweight (Troy) to Grams (Excel File) | 2014-09 |
| EPO 5 - Appendix A Table 3 | Prescription and Jeweler Scales - Table 3 Units of Mass Conversion Tables (3) – Pounds (avoirdupois) to Grams (Excel File) | 2014-09 |
| EPO 5 - Appendix A Table 4 | Prescription and Jeweler Scales - Table 4 Units of Mass Conversion Tables (4) – Ounces (avoirdupois) to Grams (Excel File) | 2014-09 |
| EPO 5 - Appendix A Table 5 | Prescription and Jeweler Scales - Table 5 Units of Mass Conversion Tables (5) – Ounces (troy) to Grams (Excel File) | 2014-09 |
| EPO 7 | Medium Capacity Scales | 2026-02 |
| EPO 9 | Part 1 – Monorail Scales - Electronic Digital Indicators and Part 2 – Monorail Scales and Meat Beams – Mechanical | 2014-09 |
| EPO 12 | Livestock and Animal Scales Part 1 - Electronic Digital Indicating Part 2 – Mechanical – Analog Indicating | 2014-09 |
| EPO 13 | Vehicle and Axle-Load Scales and Weigh-in-Motion Vehicle Scales - Part I – Electronic Digital Indicating
- Part II – Mechanical-Analog Indicating
- Appendix A. Maximum Values of the Scale Load Cell(s)
- Appendix B. Strain-Load and Substitution Load Methods of Testing and Strain-Load Testing Using Error Weights
- Appendix C. Test for Motion Detection
- Appendix D. Verification of the Weigh-in-Motion Scale Reference Vehicles
| 2026-05 |
| EPO 14 | Belt-Conveyor Systems | 2026-04 |
| EPO 16 | Automatic Bulk Weighing Systems | 2014-09 |
| EPO 16 - Appendix A | Automatic Bulk Weighing Systems - Description of Test Methods | 2014-09 |
| EPO 16 - Appendix B/ Supp. 1 | Automatic Bulk Weighing Systems - High-Level Steps to Performing the Increasing Load Test Using the Substitution or Alternative Substitution Test Method | 2014-09 |
| EPO 16 - Appendix B/ Supp. 2 | Automatic Bulk Weighing Systems - Determining Scale Error When Applying the Substitution Test Method | 2014-09 |
| EPO 16 - Appendix B/ Supp. 3 | Automatic Bulk Weighing Systems - Determining Scale Error When Applying the Alternative Substitution Test Method | 2014-09 |
| EPO 16 - Appendix C | Automatic Bulk Weighing Systems - Definitions | 2014-09 |
| EPO 21 | Retail Motor Fuel Dispensers - Single, Dual, and Multi-Product (except blenders) | 2025-08 |
| EPO 22 | Retail Motor Fuel Dispensers – Blended Products | 2025-08 |
| EPO 23 | Vehicle-Tank Meters (VTMs) - Power-Operated | 2026-03 |
| EPO 24 | Vehicle-Tank Meters (VTMs) - Gravity Discharge | 2014-09 |
| EPO 25 | Loading-Rack Meters | 2025-06 |
| EPO 26 | Liquefied Petroleum Gas (LPG) - Liquid-Measuring Systems | 2026-03 |
| EPO 28 | Compressed Natural Gas (CNG) - Retail Motor-Fuel Dispensers | 2026-04 |
| EPO 29 | Hydrogen Gas Retail Vehicle Fuel Dispensers | 2024-11 |
| EPO 30 | Retail Electric Vehicle Fueling Systems | 2025-07 |
| EPO Annex 1 | Safety Considerations and Glossary of Key Safety Phrases | 2026-02 |
