material grade classifier
IRI: https://spec.industrialontologies.org/ontology/construct/MaterialGradeClassifier
Defined In: https://spec.industrialontologies.org/ontology/biopharma/BiopharmaMaterial/
SubClass Of: classifier
Class Hierarchy
owl:Thing › bfo:entity › bfo:continuant › bfo:generically dependent continuant › information content entity › denoter › classifier › material grade classifier
Direct subclasses:
Definition
classifier that classifies a material entity into an organization- or authority-defined material grade based on the material entity’s conformance to a documented set of acceptance requirements and associated controls
Explanatory Notes
Material grade is a practical classification used to communicate that a material has been sourced, tested, and documented against a defined requirement set issued by a specific organization (for example, a pharmacopeia, a standards body, or a supplier). In chemical supply contexts, grades such as technical, ACS/reagent, USP/FCC/food, and water-treatment grade are used to distinguish different expectation levels for impurities, documentation, and suitability for a particular use. In biopharmaceutical manufacturing, grade distinctions are often framed operationally by what is purchased and how it is tested and governed, including compendial and multi-compendial grades (aligned to one or more monographs), and reagent grade (generally less preferred for regulated manufacture).
Examples
- USP grade classification of a sodium chloride raw material lot; multi-compendial grade classification of an excipient lot; ACS reagent grade classification of a Tris buffer component; technical grade classification of a cleaning chemical;
Adapted From
- https://alliancechemical.com/blogs/articles/chemicalgrades and https://www.biopharminternational.com/view/role-quality-standards-biomanufacturing-raw-materials and https://www.biopharminternational.com/view/case-study-pharmacopoeia-compliance-excipients-and-raw-materials-0
Primitive Class
This class is declared primitive and it does not have necessary and sufficient condiftions defined.
Primitive Rationale
This term is expected to remain primitive.
Formal Axioms
First-Order Logic Axioms
MaterialGradeClassifier(x) → Classifier(x) ∧ ∃m∃r (MaterialEntity(m) ∧ RequirementSpecification(r) ∧ classifies(x, m) ∧ satisfiesRequirement(m, r))
Semi-Formal Natural Language Axioms
if x is a ‘material grade classifier’ then x is a ‘classifier’ that ‘classifies’ some ‘material entity’ that ‘satisfies requirement’ some ‘requirement specification’
Description Logic
constr:MaterialGradeClassifier ⊑ constr:Classifier
constr:MaterialGradeClassifier ⊑ ∃ constr:classifies .(bfo:material_entity ⊓ ∃ constr:satisfiesRequirement .constr:RequirementSpecification)
SubClassOf: constr:Classifier
SubClassOf: constr:classifies some (bfo:material_entity and constr:satisfiesRequirement some constr:RequirementSpecification)