| A | 24-0789 | Carbon Monoxide | 0 to 9999 ppm | - | SGD 1007.25 | |
| B | 19-0398 | Combustibles | Greater Than 50 ppm Methane | 23 Degrees to 130 Degrees F, -5 Degrees to 54 Degrees C | SGD 271.96 | |
| C | 19-0499 | Combustibles | Greater Than 50 ppm Methane | 32 Degrees to 122 Degrees F, 0 Degrees to 50 Degrees C | SGD 136.54 | |
| D | 24-0788 | Oxygen | 0 to 20.9% | 32 Degrees to 104 Degrees F, 0 to 40 Degrees C | SGD 455.13 | |
| E | 19-0510 | Refrigerant | All CFC, HCFC and HFC Refrigerants | 32 Degrees to 122 Degrees F, 0 Degrees to 50 Degrees C | SGD 196.59 | |
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