Personalized Chemistry Basic Youth Long Sleeve T-Shirt. Funny, joke Youth Long Sleeve T-Shirt - White for chemists and scientists with beakers and bubbling experiment graphic says You're A 10 Maybe On The PH Scale Because You're Basic. Perfect for geeks and nerds at the laboratory or office party. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)