| Business | Phone |
| Twiss Analytical Laboratories 26276 Twelve Trees Ln Nw C, Poulsbo 98370 | (360) 779-5141 |
| General Testing Laboratories 18970 3rd Ave Ne, Poulsbo 98370 | (360) 779-9196 |
| Krazan & Assoc Inc 20714 State Highway 305 Ne, Poulsbo 98370 | (360) 598-2126 |