#### § 29.2438 Thin Leaf (C Group).

This group consists of leaves usually grown at the center portion of the stalk. These leaves normally have a rounded tip, are thinner in body than those of the B group, and show little or no ground injury. Choice- and fine-quality tobacco of this group has a distinctive, smooth leaf surface.

| U.S. grades | Grade names and specifications |
| --- | --- |
| C1L | Choice Light-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, strong, bright finish, deep color intensity, broad, 95 percent uniform, and 5 percent injury tolerance. |
| | Fine Light-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, strong, clear finish, deep color intensity, spready, 90 percent uniform, and 10 percent injury tolerance. |
| | Good Light-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, normal strength, clear finish, moderate color intensity, normal width, 80 percent uniform, and 20 percent injury tolerance. |
| C4L | Fair Light-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 70 percent uniform, and 30 percent injury tolerance. |
| | Low Light-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 60 percent uniform, and 40 percent injury tolerance. |
| | Choice Medium-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, strong, bright finish, deep color intensity, broad, 95 percent uniform, and 5 percent injury tolerance. |
| C2F | Fine Medium-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, strong, clear finish, deep color intensity, spready, 90 percent uniform, and 10 percent injury tolerance. |
| C3F | Good Medium-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, normal strength, clear finish, moderate color intensity, normal width, 80 percent uniform, and 20 percent injury tolerance. |
| C4F | Fair Medium-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 70 percent uniform, and 30 percent injury tolerance. |
| C5F | Low Medium-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 60 percent uniform, and 40 percent injury tolerance. |
| C2D | Fine Dark-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, oily, semielastic, strong, clear finish, deep color intensity, spready, 90 percent uniform, and 10 percent injury tolerance. |
| C3D | Good Dark-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, firm, lean in oil, inelastic, normal strength, clear finish, moderate color intensity, normal width, 80 percent uniform, and 20 percent injury tolerance. |
| C4D | Fair Dark-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 70 percent uniform, and 30 percent injury tolerance. |
| C5D | Low Dark-brown Thin Leaf. |
| | Thin to medium body, mature to ripe, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 60 percent uniform, and 40 percent injury tolerance. |
| C3M | Good Mixed Color Thin Leaf. |
| | Thin to medium body, mature, firm, oily, semielastic, normal strength and width, 80 percent uniform, and 20 percent injury tolerance. |
| C4M | Fair Mixed Color Thin Leaf. |
| | Thin to medium body, mature, close, lean in oil, inelastic, weak, narrow, 70 percent uniform, and 30 percent injury tolerance. |
| C5M | Low Mixed Color Thin Leaf. |
| | Thin to medium body, immature, close, lean in oil, inelastic, weak, narrow, 60 percent uniform, and 40 percent injury tolerance. |
| C3G | Good Green Thin Leaf. |
| | Thin to medium body, mature, firm, oily, semielastic, normal strength, clear finish, normal width, 80 percent uniform, and 20 percent injury tolerance. |
| C4G | Fair Green Thin Leaf. |
| | Thin to medium body, immature, close, lean in oil, inelastic, weak, dull finish, narrow, 70 percent uniform, and 30 percent injury tolerance. |
| C5G | Low Green Thin Leaf. |
| | Thin to medium body, immature, close, lean in oil, inelastic, weak, dull finish, narrow, 60 percent uniform and 40 percent injury tolerance. |