| 872.29 | Instruments, gynaecological | |
| 874.13 | Instruments, hydrographic | |
| 874.13 | Instruments, hydrological | |
| 874.13 | Instruments, levelling, surveyors' | |
| 872.29 | Instruments, lithotrity | |
| 874.22 | Instruments, marking-out (excl. tools used in graphic arts) | |
| 872.29 | Instruments, medical (excl. electromedical apparatus) | |
| 874.13 | Instruments, meteorological | |
| 898.29 | Instruments, mouth-blown, sound-signalling | |
| 896.6 | Instruments, musical, antique | |
| 898.23 | Instruments, musical, brass-wind | |
| 898.24 | Instruments, musical, percussion (excl. pianos) | |
| 898.15 | Instruments, musical, string (excl. keyboard string instruments) | |
| 898.13 | Instruments, musical, string, with keyboards | |
| 898.23 | Instruments, musical, wind (excl. organs and accordions) | |
| 898.23 | Instruments, musical, woodwind | |
| 872.29 | Instruments, obstetrical | |
| 874.13 | Instruments, oceanographic | |
| 872.25 | Instruments, ophthalmic | |
| 872.19 | Instruments, orthodontic | |
| 872.29 | Instruments, parturition | |
| 872.19 | Instruments, periodontic | |
| 872.29 | Instruments, prophylactic (excl. electromedical apparatus) | |
| 872.29 | Instruments, prostatectomy | |
| 872.29 | Instruments, surgical (incl. veterinary) | |
| 874.13 | Instruments, surveying (excl. compasses) | |
| 874.13 | Instruments, topographic | |
| 872.29 | Instruments, tracheotomy | |
| 872.19 | Insufflators, dental | |
| 872.29 | Insufflators, medical | |
| 773.29 | Insulating fittings (excl. insulators), of any insulating material (excl. ceramics and plastics), for electrical machines, appliances or equipment | |
| 773.26 | Insulating fittings (excl. insulators), of ceramic materials, for electrical machines, appliances and equipment | |
| 773.28 | Insulating fittings (excl. insulators), of plastic material, for electrical machines, appliances or equipment | |
| 728.46 | Insulating machines for electric cable (excl. gimping machines) | |
| 663.81 | Insulation material (heat- or sound-), of asbestos | |
| 663.53 | Insulation, pipe, of rock-wool | |
| 773.24 | Insulators, electrical, of any material other than glass or ceramics | |
| 773.23 | Insulators, electrical, of ceramic material (i.e., porcelain, steatite) | |
| 773.22 | Insulators, electrical, of glass | |
| 541.51 | Insulin and its salts, not put up as medicaments | |