## Purchase Requisition
### Definition
A formal request document that authorises the purchase department to procure the materials specified in it.
### Purpose
Ensures coordination between production and purchase departments, especially for the timely availability of materials.
### Who prepares it?
| Type of material | Prepared by |
|---|---|
| Regular materials (routinely stocked items) | Storekeeper |
| Special materials (not stocked regularly) | Departmental Head or technical team |
### Working mechanics
- Initial step: A complete materials list is prepared at the start and periodically reviewed for additions/deletions.
- Standing order practice: Once a material is on the standard list, the purchase department must replenish stock before it runs out.
- Consumption pattern: Any change in usage must be reported to the purchase department for timely action.
- Inventory control: For regular store items, the inventory control system fixes stock levels and order quantities.
- Special materials: The technical department must supply a detailed specification list (quantity, size, type, etc.).
- Origin of requisition: Stores department (regular items) or technical/production departments (special items).
> Key contrast: The storekeeper triggers replenishment of standard items via the re-order level; technical/departmental heads requisition non-standard items.