Grey/black Maintenance absorbents are hydrophilic and take up both water-based fluids along with oil-based fluids at the same time. These are the best all-round option for recovering spills of any type. In most instances white Oil only absorbents will be best suited to the vast majority of tasks involved in oil and gas refining, transportation and distribution. For vehicle fleet management, fuelling and servicing, Oil Only absorbents will provide the better option here too. For more generic building maintenance and cleaning grey Maintenance absorbents will cover the tasks at hand. For any aggressive spills like acids or alkalis yellow Chemical absorbents should be the default choice