1. Adhere to the instructions of test procedures. Do not run more than 8 tests at one time. 2. Store test kits at 2-8˚C when not in use, and do not use the kits beyond the expiration date. 3. Please don’t touch the membrane on the strips. 4. Remove microwell sealer slightly to prevent the powder from being released from the wells. 5. The sample to be tested must be a homogeneous liquid which cannot be agglomerated, fermented, rancid precipitated, etc., and cannot be colostrum. 6. Avoid direct sunlight and direct blows during testing. 7. Do not re-use pipette tips, test strips or microwells. 8. The unsealed microwells should be used within 1 hour. 9. Do not take tap-water, distilled water or deionized water as the negative control. 10. This test method is just used for rapid screening purpose, if positive results are occurred, please verify them by a quantitative method. 11. Considering that all materials, containers and devices exposed to the sample are contaminated with harmful substance，please wear protective gloves and safety glasses while using the kit. 12. The components in this test kit have been quality control tested as a standard batch unit. Do not mix components from different lot numbers. 13. Any problem encountered during usage, please contact with the supplier.