GAC Bulk Density and Bed-Charge Planning
Distinguish carbon charge mass from bed volume. Request the quoted grade’s density method and moisture basis instead of borrowing another product’s value.
Keep GAC purchase mass and occupied bed volume as separate quantities and request the proposed grade's density property, method and moisture basis. GBL's coal-based carbon page lists apparent density for inquiry. The cited Calgon sheet places apparent density among the typical properties of its own named product; its value is not a GBL specification.
Review Checklist
| Review Item | Suggested Buyer Action |
|---|---|
| Quantity basis | State whether the purchase request is for mass or occupied bed volume. |
| Density basis | Request the exact reported property name, measurement method and material condition. |
| Vessel review | Ask the vessel or media supplier to confirm the intended filling basis and loading procedure. |
Which evidence belongs with a GAC bed-charge quantity request?
State whether the requested GAC quantity is a purchase mass or an occupied bed volume. Identify the offered grade and request its density property, measurement method and material condition. Keep that evidence beside the quantity calculation, and ask the vessel or media supplier to confirm the filling basis and loading procedure.
Who should confirm the vessel filling basis?
Ask the vessel or media supplier to confirm the intended filling basis and loading procedure.
Does the quantity calculation replace application-performance evidence?
Request separate evidence for adsorption performance and the target application.
Prepare the Review
- Identify the exact grade proposed for the bed.
- Keep the density evidence beside any quantity calculation.
- Request separate evidence for adsorption performance and the target application.
Questions and Answers
How are mass and volume related?
For a consistent density basis, mass equals volume multiplied by density. This dimensional relation does not specify a vessel loading procedure.
Can another manufacturer's typical density qualify a GBL grade?
Request the density data for the actual offered grade. The external sheet describes its own named product.
References
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