The SARSTEDT S-Sedivette 06.1690.001 is a closed blood collection and measurement system for determining the erythrocyte sedimentation rate (ESR) from venous blood. Sedimentation can be measured directly in the collection tube, eliminating the need to transfer the sample to a separate Westergren pipette.

The S-Sedivette already contains 0.7 ml of citrate solution and is filled with 2.8 ml of venous blood up to the intended fill volume of 3.5 ml. This maintains the specified ratio of blood to citrate. Underfilling or overfilling may affect the result of the red blood cell count measurement.

The S-Sedivette is specifically designed for measuring the erythrocyte sedimentation rate and contains a citrate buffer solution. In contrast, an S-Monovette with K3 EDTA is intended for obtaining anticoagulated whole blood for hematological analyses such as a complete blood count. The two tubes are not interchangeable due to their different additives and intended uses.

During manual measurement using the appropriate SARSTEDT sedimentation rack, the erythrocyte sedimentation rate is read after one hour. The measurement is carried out directly in the S-Sedivette, without the need for a separate sedimentation pipette. The instructions for use of the measurement system employed are authoritative.

The S-Sedivette has a tube diameter of 8 mm and a length of 130 mm without a stopper. With a stopper, the length is 146 mm according to SARSTEDT. Item number 06.1690.001 has a purple stopper according to the EU color code, as well as a paper label for sample identification.

The sales unit of the SARSTEDT S-Sedivette 06.1690.001 contains 50 sterile tubes. These are single-use products for venous blood collection and subsequent ESR measurement. Reuse is not intended. Sampling, mixing, and measurement are to be carried out in accordance with the manufacturer's instructions and laboratory SOP.