What should it take to describe a substance or product as 'sperm safe'

Human Reproduction Update, Vol. 19, Supplement l pp. il-i48, 2013

A multinational research team sets guidelines for products to be labeled "sperm safe", helping couples select the right lubricant when they are trying to conceive. The researchers from six countries affirms that Pre-Seed Fertility-Friendly Lubricant, is considered sperm safe for use by couples trying to conceive.