| Business | Phone |
| Accu-Test Labs 7821 Pinemont Dr, Houston 77040 | (713) 460-3655 |
| Quality Concepts Inspections 7825 Hillmont St, Houston 77040 | (713) 690-2703 |
| Rite Svc 8811 Emmott Rd, Houston 77040 | (713) 937-4122 |
| Severn Trent Labs 6210 Rothway St 130, Houston 77040 | (713) 690-4444 |
| Wiss Janney Elstner Assoc 10235 W Little York Rd, Houston 77040 | (832) 467-2177 |
| Dixie Testing & Products Inc 9723 Honeywell St, Houston 77074 | (713) 270-7353 |
| Pbs & J 888 W Sam Houston Pkwy S 110, Houston 77042 | (713) 977-1500 |
| Acs Laboratories Inc 16203 Park Row 100, Houston 77084 | (281) 579-8822 |
| Advanced Particle Measurements Houston 77084 | (281) 578-0678 |
| Bandy & Assoc 11710 Almeda Genoa Rd, Houston 77034 | (713) 947-1055 |
| Bell Evaluation Laboratory Inc 17300 Mercury Dr, Houston 77058 | (281) 488-3701 |
| Bodycote Materials Testing 9925 Regal Row, Houston 77040 | (713) 939-8690 |
| Bryan Laboratory Inc 6919 Almeda Rd, Houston 77021 | (713) 747-7470 |
| C & C Marine Geosciences 10615 Shadow Wood Dr, Houston 77043 | (713) 984-2051 |
| Cdj Svc Inc 8450 Rayson Rd, Houston 77080 | (713) 895-8855 |
| Component Sales & Svc Inc 1231 Buschong St, Houston 77039 | (281) 442-8127 |
| Precision Geosynthetic Lbrtrs 600 Kenrick Dr, Houston 77060 | (281) 405-0843 |
| Core Laboratories Inc 8210 Mosley Rd, Houston 77075 | (713) 943-9776 |
| Edward L Haile & Assoc Inc 9934 Sweetwater Ln, Houston 77037 | (281) 448-9725 |
| Energistics Laboratory 5821 Beverlyhill St, Houston 77057 | (713) 266-1849 |
| Johnny Flanagan 5912 W 34th St, Houston 77092 | (713) 956-0969 |
| Microalloying International 10175 Harwin Dr 107, Houston 77036 | (713) 771-5446 |
| Metals Inc 3616 Dover St, Houston 77017 | (713) 641-0436 |
| Metco 10801 Hammerly Blvd, Houston 77043 | (713) 465-5771 |
| Geo Science 405 E 20th St, Houston 77008 | (713) 861-9700 |
| Gulf Coast Laboratory Svc 11921 Windfern Rd, Houston 77064 | (281) 970-4257 |
| Lone Star Lab 7505 Fannin St 333, Houston 77054 | (713) 796-2628 |
| Lone Star Testing Laboratories 7036 Mapleridge St, Houston 77081 | (713) 666-6030 |
| Lovel Laboratories 9414 Misty Vale Ln, Houston 77075 | (713) 991-0556 |
| Hts Inc 416 Pickering St, Houston 77091 | (713) 692-8373 |
| Independent Testing Labs Inc 19424 Park Row # 110, Houston 77084 | (281) 391-1555 |
| Industrial Inspection Inc 6821 Telephone Rd, Houston 77061 | (713) 645-8923 |
| Iti Anti-Corrosion Inc 10175 Harwin Dr 107, Houston 77036 | (713) 771-0688 |
| Intertek Caleb Brett 2200 West Loop S 200, Houston 77027 | (713) 407-3500 |
| Msi Lab Svc 9203 Hwy 6th S # 124, Houston 77083 | (713) 849-9445 |
| Mtec 8676 Taub Rd, Houston 77064 | (281) 469-2609 |
| Southwestern Laboratories 2522 Texas St, Houston 77003 | (281) 488-4824 |
| Wilmington Institute Trial 1221 Mckinney St 3110, Houston 77010 | (713) 659-6600 |
| Saybolt Inc 16640 Jacintoport Blvd, Houston 77015 | (281) 862-2400 |
| Structural Forensics Lp 1700 West Loop S, Houston 77027 | (713) 961-9604 |
| Quality Labs Of Texas 9644 Clinton Dr, Houston 77029 | (713) 672-5656 |
| Sgs Control Svc 12621 Featherwood Dr, Houston 77034 | (281) 481-5817 |
| Tqs Inc 14610 Sheraton St, Houston 77039 | (281) 449-5228 |
| Saybolt Inc 6316 Windfern Rd, Houston 77040 | (713) 328-2320 |
| Tejas Testing & Inspection Inc 4601 S Pinemont Dr 136, Houston 77041 | (713) 939-0440 |
| Stasico Sound Productions 4341 Mallow St, Houston 77051 | (832) 289-6604 |
| Raytheon Co 9433 Kirby Dr, Houston 77054 | (713) 852-3000 |
| Your Health Lab 7580 Fannin St 101, Houston 77054 | (713) 791-9252 |
| Analyst Services 12715 Royal Dr, Houston 77057 | (713) 240-3042 |
| Rothe Development Inc 920 Gemini St, Houston 77058 | (281) 333-0932 |
| Texas Calibration & Crtfctn 8402 Scranton St, Houston 77061 | (713) 944-9696 |
| Weidmann Acti Inc 8406 Scranton St, Houston 77061 | (713) 595-1030 |
| Power Well Services 12777 Jones Rd 280, Houston 77070 | (281) 949-3400 |
| Hercules Engineering & Testing 283 Lockhaven Dr 303, Houston 77073 | (713) 856-5753 |
| Precision Calibration & Repair 3130 Farrell Rd, Houston 77073 | (281) 209-9000 |
| Psi 622 Old Underwood Rd, Houston 77082 | (281) 479-1307 |
| Ogs Laboratory Inc 15730 Park Row 500, Houston 77084 | (281) 599-1300 |
| Qual Center 821 Peakwood Dr, Houston 77090 | (281) 880-7855 |
| Pacs Construction Labs 2519 Fairway Park Dr 302, Houston 77092 | (713) 681-6606 |
| Stork Southwestern Labs Inc 222 Cavalcade St, Houston 77009 | (713) 692-9151 |
| Texas Indicator & Micrometer 1804 Wayside Dr, Houston 77011 | (713) 926-2919 |
| Coating Laboratory 10175 Harwin Dr, Houston 77036 | (713) 981-9368 |
| Texas Energy Lab Inc 1729 Lauder Rd, Houston 77039 | (281) 442-6733 |
| Testmasters Inc 5711 Cunningham Rd, Houston 77041 | (713) 896-1885 |
| Phoenix Non-Destructive Co 8835 Miller Road 2, Houston 77049 | (281) 456-9729 |
| Spl Inc 8880 Interchange Dr, Houston 77054 | (713) 660-0901 |
| Wallace Environmental Testing 2140 Wirtcrest Ln, Houston 77055 | (713) 956-7705 |
| Precision Petroleum Labs Inc 5915 Star Ln, Houston 77057 | (713) 680-9425 |
| Pace Analytical Svc Inc 900 Gemini St, Houston 77058 | (281) 212-8100 |
| Vdm Technologies Corp 11210 Steeplecrest Dr 120, Houston 77065 | (281) 955-6683 |
| H & G Inspection 9315 Summerbell Ln, Houston 77074 | (281) 498-6517 |
| Quantz & Assoc Inc 8450 Rayson Rd, Houston 77080 | (713) 939-7333 |
| W H Laboratories Llc 8450 Rayson Rd, Houston 77080 | (713) 895-7504 |
| Spectra-Chem 7329 Ashcroft Dr, Houston 77081 | (713) 271-2016 |
| Triton Analytics Corp 16840 Barker Springs Rd 302, Houston 77084 | (281) 578-2289 |
| Instrument Repair 4400 S Wayside Dr, Houston 77087 | (713) 649-7755 |
| Oscilloscope Services Inc 7827 Kingsley St, Houston 77087 | (713) 645-2029 |
| Q C Laboratories Inc 10810 Northwest Fwy, Houston 77092 | (713) 695-1133 |
| Scr Laboratories Inc 4800 W 34th St A12, Houston 77092 | (713) 682-6738 |
| Petroleum Industry Inspectors 1817 Tidwell Ln, Houston 77093 | (713) 692-4801 |
| Texas Oil Tech Laboratories 10630 Fallstone Rd, Houston 77099 | (281) 495-2400 |