Saliva-based ovulation tester Re-usable month after month Helps identify the ideal time to conceive Simple and convenient Shows the link between oestrogen and salt levels in salvia How does Maybe Baby Easy Ovulation Tester work? Maybe Baby Easy Ovulation Tester is a mini-microscope that shows the link between oestrogen and the salt levels in your saliva. As ovulation approaches, your oestrogen levels increase and this increases the salinity (salt levels) of your saliva. When dried saliva is viewed under a microscope, the crystallised patterns that are formed by increased salt levels are different from patterns which form when salt (and oestrogen) levels are low. The mini-microscope has a 52x power magnification lens. By monitoring your saliva everyday and comparing the image of your dried saliva in the viewfinder, you can determine your most fertile days. At the beginning of your cycle oestrogen levels are low and your Maybe Baby Easy Ovulation Tester will show a pattern of pebbles or dots. As you approach ovulation oestrogen levels begin to rise and a transitional pattern of ferns and pebbles/dots will be visible. Around ovulation, oestrogen levels peak and a distinctive 'fern' pattern will be visible. After ovulation, as oestrogen levels fall, a transitional pattern or a pattern of pebbles/dots will be visible again.