Table 1.
Comparison of the processing methods used in the original and current methylene blue treatment systems
| Processing steps | Springe | THERAFLEX (Macotronic V) | THERAFLEX (Macotronic B) |
|---|---|---|---|
| 1. Freezing/thawing | yes | no | no |
| 2. Leucodepletion | no | yes* | yes* |
| 3. Addition of MB | 50 μmol/l MB solution volume adjusted to 1 μmol/l | 85 μg of MB dry pill | 85 μg of MB dry pill |
| 4. Illumination | one side | two side | two side |
| fluorescent lamps | sodium lamps | Light emitting diodes | |
| no temperature control | temperature monitoring | temperature monitoring | |
| 5. Removal of MB | no | yes | yes |
*
0.65 μm membrane filter is integrated in the system.