The following table describes symbols that may be displayed on Thermo Fisher Scientific instruments, consumables, or reagents.
| Symbol | Description | Symbol | Description |
|---|---|---|---|
 | Manufacturer |  | Lower limit of temperature |
 | Date of manufacture | | Upper limit of temperature |
 | Use by | | Upper and lower limits of temperature |
 | Batch code |  | Upper and lower limits of humidity |
 | Catalog number |  | Biological risks |
 | Serial number |  | Do not reuse |
 | Fragile. Handle with care. |  | Consult Instructions for Use |
 | Protect from light |  | Caution |
 | Contains sufficient for <n> tests |  | Sterilized using asceptic processing techniques |
 | Read Safety Data Sheet |  | Country of manufacture |
 | Unique device identifier |  | In Vitro Diagnostic medical device |
 | CAUTION: Federal law restricts this device to sale by or on order of a physician |  | Indicates conformity with European Union requirements |
 | Authorised representative in the European community |  | Indicates conformity with United Kingdom requirements |
 | For Investigational Use Only. The performance characteristics have not been established. |  | Negative control |
 | Positive control |  | Contains biological material of animal origin |
 | Corrosive |  | Health hazard/Hazardous to the ozone layer |
 | Serious health hazard |