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The tubes are specially used for the determination of the erythrocyte sedimentation rate (ESR) by Westergren’s Method. The mixing ratio is 1 part citrate solution to 4 parts blood. ESR measurements refer to the Westergren method.
| Material | Glass |
| Cap Color | Black |
| Additive | 3.8% Sodium Citrate(1:4) |
| Specimen | Whole Blood |
| Specs | 13*75mm |
| Draw Volume | 1.28ml, 1.6ml, 2.4ml, 4ml |
| Max.Vacuum Degree Tolerance | ±10% |
Attentions:
