The tubes are specially used for the determination of the erythrocyte sedimentation rate (ESR) by the instrument automatically. The mixing ratio is 1 part citrate solution to 4 parts blood.
| Material | Glass |
| Cap Color | Black |
| Additive | 3.8% Sodium Citrate(1:4) |
| Specimen | Whole Blood |
| Specs | 8*120mm |
| Draw Volume | 1.28ml |
| Max.Vacuum Degree Tolerance | ±10% |
Attentions: