| Tool | Reference Standard | |
| IEEE C57. 104-1991 | IEC 60599-1999 | |
| Key Gas Procedure | X |
|
| Rogers Ratios | X |
|
| TDCG Procedure | X |
|
| Basic Gas Ratios |
| X |
| Duval Triangle |
| X |
| Doernenburg Ratios | X |
|