2. For the following provisions of the Schedule to the Control of Substances Hazardous to Health (Amendment) Regulations 1996(1)—
| “Substance | Formula | Reference periods | |||
|---|---|---|---|---|---|
| Long-term maximum exposure limit (8-hour TWA reference period) | |||||
| ppm | mg m−3 | ||||
| Short-term maximum exposure limit (15-minute reference period) | |||||
| ppm | mg m−3 | ||||
| Cobalt and cobalt compound (as Co) | Co | — | — | Cotton dust | |
| — | 2.5 | — | — | 1,2– | |
| Dibromoethane (Ethylene dibromide) | BrCH2CH2Br | 0.5 | 3.9 | — | —” |
there shall be substituted the following—
| “Substance | Formula | Reference periods | |||
|---|---|---|---|---|---|
| Long-term maximum exposure limit (8-hour TWA reference period) | |||||
| ppm | mg m−3 | ||||
| Short-term maximum exposure limit (15-minute reference period) | |||||
| ppm | mg m−3 | ||||
| Cobalt and cobalt compound (as Co) | Co | — | 0.1 | — | — |
| Cotton dust | — | 2.5 | — | — | |
| Dibromoethane (Ethylene dibromide) | BrCH2CH2Br | 0.5 | 3.9 | — | —” |