| Observation | Possible causes | Recommended solutions |
|---|---|---|
| Excessive amount of debris in display | Threshold level is too low | Increase the threshold level |
| Sheath filter is dirty | Replace the filter. Contact FMCF staff | |
| Flow cell is dirty | Prime the instrument several times. Contact FMCF staff | |
| Dead cells or debris in sample | Examine the sample under a microscope | |
| Sample is contaminated | Re-stain the sample, ensure tube is clean | |
| Stock sheath fluid is contaminated | Contact FMCF staff |
