Overview
- External ontology
- UTEX:volvocacean-medium (source link unavailable) — Volvocacean Medium
- Applications
-
- Algae cultivation
- Phytoplankton culture
- Microalgae research
- Notes
- UTEX combines 800 mL Waris Medium prepared without pH adjustment with 200 mL Euglena Medium per liter of liquid blend.
Ingredients (0)
No ingredients recorded.
Preparation
- Prepare 1 L Waris Medium without pH adjustment and prepare 200 mL Euglena Medium.
- Discard 200 mL of the Waris preparation. Combine the remaining 800 mL with the prepared 200 mL Euglena in a 2 L Erlenmeyer flask.
- Cover the flask and autoclave the combined medium.
- Store at refrigerator temperature.
Solutions
Waris Medium
Dose: 800 ML_PER_L
Waris is prepared without pH adjustment; 800 mL is used in the stated 1 L liquid blend.
Euglena Medium
Dose: 200 ML_PER_L
UTEX lists 200 mL prepared Euglena Medium per 1 L final medium.
Target organisms
No target organisms are recorded.
Recipe variants
- Name
- Optional agar formulation
- Relationship
- PHYSICAL_STATE_VARIANT
- Description
- Source-described agar alternative to the liquid blend.
- Modifications
- After combining the 800 mL Waris and 200 mL Euglena portions, add 10.0 g agar to the flask without stirring; then cover and autoclave.
- Evidence
- Reference
- https://utex.org/products/volvocacean-medium
- Supports
- SUPPORT
- Snippet
- 10.0 grams
- Explanation
- variants[0].modifications[0]: Directions 4 optional agar instruction specifies "10.0 grams" and "do not mix."; Directions 5 specifies "Cover and autoclave.". The amount is added after the stated 1 L liquid blend, not asserted as a measured final-volume concentration.
Provenance
| Timestamp | Curator | Action | Notes |
|---|---|---|---|
| 2026-01-28T00:00:00+00:00 | utex-import | Imported from UTEX Culture Collection | Source ID: volvocacean-medium, URL: https://utex.org/products/volvocacean-medium |
| 2026-03-13T06:18:53.673450Z | culturemech-id-assigner-v1.0 | Assigned CultureMech ID | Assigned stable identifier: CultureMech:000236 |
| 2026-03-17T19:45:04.581941+00:00 | normalize_media_names_to_snake_case.py | NAME_NORMALIZED | Normalized name from "Volvocacean Medium" to "volvocacean_medium" for consistent matching |
| 2026-05-16T09:02:56.156372+00:00 | migrate_legacy_fields.py | MIGRATED_LEGACY_FIELDS | curation_history.date->timestamp=1; references.reference_id->reference=2; category->lowercase=1 |
| 2026-05-16T09:11:01.374698+00:00 | migrate_preparation_steps.py | MIGRATED_PREPARATION_STEPS | instruction->action+description for 9 step(s) |
| 2026-08-30T00:58:31.041123+00:00 | repair_utex_ingredients.py | REPAIRED_UTEX_COMPOSITION | Restored 2 ingredient name(s) and amount(s) from a re-fetched UTEX capture. The original fetcher read fixed column positions, so the row ordinal was stored as the ingredient name, the component name as the amount, and the Amount column was never read; concentration was then filled in as G_PER_L regardless. Source: https://utex.org/pages/algal-culture-media, captured 2026-08-29T17:46:40.207779. |
| 2026-09-06T00:00:00-07:00 | repair_utex_remaining_score50.py | RESOLVED_UTEX_SCORE50_ALGAE_GRAPH | UTEX prepares Volvocacean Medium by combining 800 mL prepared Waris Medium with 200 mL prepared Euglena Medium. |
| 2026-10-11T02:43:27.765962+00:00 | codex | CURATED_UTEX_VOLVOCACEAN_BG11_CONCENTRATION_EVIDENCE | Retained the source-supported 800/200 mL liquid blend, added concentration evidence, restored the unadjusted-pH Waris preparation and autoclaving, and recorded the optional 10.0 g agar addition separately. Linked parent compositions and unrelated growth claims were not certified. No taxa-media associations added. |