FAQ1: What is the in-use stability?
Once opened, the reagents can be used until the expiry date (24 months after production) if stored and used correctly.
FAQ2: How long should we wait before we count cells after staining?
Read the slide immediately. Nigrosin is toxic for spermatozoa. If the slide is not read immediately, the counted value might be false positive.
FAQ3: Is a smear necessary?
No, it is better to put a drop on the microscope slide and cover this with a cover slip.