| A0 | North America |
| A1 | Universal EURO |
| A10 | China |
| A11 | India |
| A12 | Brazil |
| A2 | United Kingdom |
| A3 | Australia |
| A4 | 240v North America |
| A5 | Switzerland |
| A6 | Japan |
| A99 | No Power Cord or AC Adapter |
| C3 | Calibration Service 3 Years |
| C5 | Calibration Service 5 Years |
| D1 | Calibration Data Report |
| D3 | Calibration Data Report 3 Years (with Option C3) |
| D5 | Calibration Data Report 5 Years (with Option C5) |
| R3 | Repair Service 3 Years (including warranty) |
| R3DW | Repair service coverage 3 years (includes product warranty period); 3 year period starts at time of customer instrument purchase |
| R5 | Repair Service 5 Years (including warranty) |
| R5DW | Repair service coverage 5 years (includes product warranty period); 5 year period starts at time of customer instrument purchase |