Yes, the best to use are the pH sticks to check aquarium pH levels. There is a color code on the back that shows a range from 6-9 (most dogs will normally fall into this range). You just collect the urine, dip the pH stick in and record the number matching the color of the stick and the color code on the back of the bottle. They usually come in container with about 25 sticks for under $20.00
Good Luck!