Overview
- Notes
- Boron stock solution for Bold Basal Medium (BBM) and related algae culture media. Provides boron as an essential micronutrient for algae growth. Preparation: Dissolve 11 g boric acid in approximately 900 mL distilled water, then bring to 1 L total volume. Storage: Room temperature in darkness. Source discrepancy: the preparation specifies 11 g H3BO3 per final 1 L, but the same page also prints approximately 9 micromolar as a final solution concentration. That parenthetical is not treated as verified stock molarity. The mass concentration is retained; no replacement molarity or receiving-medium interpretation is inferred.
Stock composition (1)
| # | Ingredient | Concentration | Ontology | Notes |
|---|---|---|---|---|
| 1 |
Boric acid
H3BO3 61.833 g/mol
|
11.0 G_PER_L |
CHEBI:33118
boric acid
|
Target organisms
No target organisms are recorded.
Provenance
| Timestamp | Curator | Action | Notes |
|---|---|---|---|
| 2026-03-15T00:00:00Z | mediaingredientmech-migrator-v1.0 | Created from MediaIngredientMech migration | Composition extracted from UTEX Culture Collection protocols |
| 2026-04-04T17:49:50.327381 | categorize_unknown_media | CATEGORIZED | Automated categorization (confidence: 0.11). Weak match (score: 0.13), defaulting to bacterial |
| 2026-05-16T09:02:58.405064+00:00 | migrate_legacy_fields.py | MIGRATED_LEGACY_FIELDS | references.reference_id->reference=3 |
| 2026-06-08T23:17:55.782622+00:00 | mim-legacy-to-chebi-migration-v1.0 | Refreshed legacy MediaIngredientMech links to CHEBI keying | Replaced 1 legacy mediaingredientmech_term link(s) with mediaingredientmech_chebi_term (id-safe: ingredient's own CHEBI + label). MIM deprecated the MediaIngredientMech:NNNNNN id scheme. |
| 2026-10-10T06:43:40+00:00 | codex | CURATED_UTEX_MIGRATED_STOCK_CONCENTRATION_EVIDENCE | Source-backed evidence and stock-context review. No structured concentrations or identities changed; conflicts stay explicit. |