S-Monovette® is a blood collection system that combines two blood collection techniques – aspiration and vacuum. The S-Monovette® is suitable for all vein conditions and achieves an optimal sample quality, thereby producing the best results. The aspiration technique is a gentle technique for routine blood collection. Using the vacuum technique, a 'fresh' vacuum is always available.

The S-Monovette® CPDA₁ is used in transfusion medicine, for blood group serology when testing for tolerance (cross-matching) in transfusions, and for cell preservation for up to 35 days, which corresponds to the preservation lifetime.

CTAD₁ solution is made up of acetic acid, sodium citrate, sodium phosphate, dextrose and adenine.