Each capability band describes a range in which a standard may support work.
Capability fields
Record the quantity type, controlled unit, inclusive lower and upper range, evidence route, intended use or specification, and environmental conditions. For numeric evidence, enter the actual expanded uncertainty and explicit coverage factor; no k is assumed.
For a class/MPE-only standard or explicitly unstated uncertainty, choose that evidence route. Retain the source specification and suitability justification for the intended range and checks. U and k remain unknown. These routes support suitable non-accredited verification or check-standard work and cannot supply numeric uncertainty to calculations. A provider assessment alone does not establish a traceability terminal.
Metra retains exact decimal strings. A numeric reference contribution uses a Type B normal source with the exact frozen expanded uncertainty and stated coverage factor. Metra converts compatible uncertainty units as differences, without temperature offsets. The entered uncertainty and divisor must match those source values; substituting another value, distribution or derived divisor is blocked. Historical work retains the source revision used for that work.
Restrictions
Restrictions may govern quantity, range, permitted use, location or environment, effective dates, or another qualitative condition. Choose Warning for a condition requiring attention and Blocking when normal use must be prohibited.
Keep descriptions actionable. For example, write "Use only in a stirred liquid bath from 15 degrees C to 40 degrees C" rather than "Limited use".
Changing a capability or restriction creates a new profile revision and does not rewrite historical use.