ID-Diluent 1 is a modified Bromelin solution in which the enzyme activity is stabilized for a long period and specially prepared for the ID-System. ID-Diluent 1 is used for preparing suspensions of red cells for blood grouping and as a additive for enzyme tests with untreated red cells for antibody detection and crossmatching.

ID-Diluent 2 is a modified, low-ionic strength solution made for the ID-System. It is used for preparing 5% red cell suspensions for blood grouping as well as 0.8% red cell suspensions for crossmatching, autocontrol, direct anti-human globulin test, blood grouping of newborns and test cells prepared in the laboratory.

ID-Papain is a standardized liquid papain solution that may be used for pre-treating red cells by laboratories that prepare their own red cell reagents, or may be used as an enzyme additive reagent in a one stage technique.
•Stability: 7 weeks, shipment on standing order every 4 weeks

ID-CellStab is a specially formulated, glycine buffered saline which stabilizes red cells at 0.8% concentration for use in the ID-System for up to 4 weeks after preparation.

When required, red cells can be papainized by the blood group laboratory, using ID-Papain, a standardized liquid papain solution. After treatment of the red cells with papain, the cells must be washed with the specially prepared ID-CellWash-P.