Lifetime Replacement Guarantee:
The KNOWHEN® Saliva Fertility Tester is guaranteed for life for 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 the proper solution. To exchange the KNOWHEN® Saliva Fertility Tester send $5.99 for return postage, insurance, and handling to manufacture. Your original receipt and packaging must accompany your returned microscope.
Manufacture: Hilin Life Products, Inc. ONE GATEWAY PL., SUITE 2600 Newark, NJ07102.