• This device is a specially-designed electronic 'differential scale' for a peculiar use in blood banks. It measures two weights independently and displays how much which side is lighter than the other side.
• For plasma separation from whole blood, blood bags are loaded in high-speed centrifuges.
  It is an essential process in blood banks that, before being loaded into centrifuges, weight
  of the two loads (each blood bag + bucket) has to be matched to be same or very close, otherwise weight unbalance could damage the centrifuges.
• This simple device makes weight-balancing process very simple, accurate and speedy.
  It will be a perfect way to save valuable centrifuge machines, as well as labor.

• Has two independent weight sensors, and displays weight difference.
• How to use:
  - Operators put two buckets (with blood bags in each bucket) on both plates.
  - Display shows weight difference and an indication lamp at the lighter side turns on.
  - Operators just add a few weight-chips (e.g. 1 gram each) into bucket until 'GOOD' lamp    turns on. The lamp turns on when weight difference becomes less than allowance.
• Accurate, simple and very easy to use.

               It's simple and speedy. 

              
                B-side is lighter by 4 grams. Adding a few weight-chips in B will make GOOD lamp light.