| 334516 |
Nanosensor instruments manufacturing |
| 334516 |
Nephelometers (except meteorological) manufacturing |
| 334516 |
Neutron activation analysis instruments manufacturing |
| 334516 |
Osmometers manufacturing |
| 334516 |
Particle beam excitation instruments, laboratory-type, manufacturing |
| 334516 |
Particle size analyzers manufacturing |
| 334516 |
Photometers (except photographic exposure meters) manufacturing |
| 334516 |
Photonexcitation analyzers manufacturing |
| 334516 |
Polariscopes manufacturing |
| 334516 |
Polarizers manufacturing |