The KNOWHEN® Ovulation Test is guaranteed for life against all manufacturing defects. However, prior to returning the microscope we suggest you call our Customer Service Department toll-free at 1-877-456-6943 to discuss the problem and allow our service experts to provide you with the proper solution.

To exchange the KNOWHEN® Ovulation Test you will need to send $5.99 for return postage, insurance and handling. You must also include your original receipt and product packaging along with your returned microscope.

Return to: Hilin Life Products, Inc. 211 Warren St. Suite 211, Newark, NJ 07103 USA