My husband did the test, and it is wrong, ive never been with anyone. So what can i do now?

Checkmate solution will turn a stain purple (almost) immediate but definitely within 15 seconds. The solution is reacting with the stain (whatever it is) and the stain will turn many different colors after 15 seconds…sometimes red/yellow or purple. That’s the beauty of the test…the color purple must/will appear within 15 seconds if the stain is semen…period! I suggest redoing the test together and follow the instructions 100%. To summarize: If the stain turned purple (light or dark) within 15 seconds after applying the mixed solution, then it is a positive result. Whatever happens after 15 seconds doesn’t matter. Remember, If you used the blotting paper it must be dry before applying the solution.

Does it work in black clothe, and could be used in it.

Yes...the CheckMate kit includes white blotting paper used to blot the stain after you place a few drops of clear liquid (on the stain). This removes some of the stain from the clothing to the (white) blotting paper. Once the blotting paper has dried, you apply the solution that test for the presence of semen. If semen is present, the blotting paper will turn purple within the first 15 seconds.