Evaluate sperm maturity by staining sperm nucleoprotein and assessing the occurrence of nucleoprotein transition.
• WHO recommended method • Aniline blue and eosin Y stains • Easy to evaluate: immature sperm head is blue and mature sperm head is red after staining • 20 tests/kit, stable for 12 months at 2-8℃ and 15 days at 2-8℃ after opening