Check A Leak -- Professional

"Lexan" - This nearly indestructible unit is designed for the harsher commercial environment. (Ie. Travelling in the back of your service truck and surviving when a bucket of chlorine tabs slides into it when you come to a quick stop at an intersection or you drop it on the driveway when you are trying to carry everything in one trip to the back of someone's house.)
Professional Model
Professional Model -- $49.99