I apologize, I have never used Softbank, but I am familiar with reconstituted RBCs. I assume when you say Reconstituted RBCS, you are talking about adding plasma to red cells to get a desired hematocrit. The attachments is from the ICCBBA website. It tells you how to get an FDA compliant product label for reconstituted red blood cells.
https://www.iccbba.org/uploads/b3/03/b303897194221c1b11b7637c5b3812f0/Reconstituted-Red-Blood-Cells.pdf
Also, there are simple math formulas to figure out how much plasma you need to add to RBCs in order to get a desired hematocrit. But your software should be able to handle the math, all you need are the numbers for your product label.
Reconstituted-Red-Blood-Cells.pdf