soil_extract_medium

CultureMech:000223 algae COMPLEX LIQUID
Original name: Soil Extract Medium

Overview

Applications
  • Algae cultivation
  • Phytoplankton culture
  • Microalgae research
Notes
UTEX prepares Soil Extract Medium by replacing 40 mL of a 1 L Bristol Medium batch with 40 mL filtered Soilwater: GR+ Medium supernatant.

Ingredients (0)

No ingredients recorded.

Preparation

  1. Prepare 1 L of Bristol Medium and discard 40 mL.
  2. Filter prepared Soilwater: GR+ Medium to remove soil particles.
  3. Add 40 mL of Soilwater: GR+ Medium supernatant to Bristol Medium.
  4. Cover and autoclave the medium.
  5. Store at refrigerator temperature.

Solutions

Bristol Medium

Dose: 960 ML_PER_L

CultureMech:000037

UTEX lists 960 mL prepared Bristol Medium per 1 L final medium.

Soilwater: GR+ Medium

Dose: 40 ML_PER_L

CultureMech:000225

UTEX lists 40 mL filtered Soilwater: GR+ Medium supernatant.

Target organisms

No target organisms are recorded.

Provenance

TimestampCuratorActionNotes
2026-01-28T00:00:00+00:00 utex-import Imported from UTEX Culture Collection Source ID: soil-extract-medium, URL: https://utex.org/products/soil-extract-medium
2026-03-13T06:18:53.610476Z culturemech-id-assigner-v1.0 Assigned CultureMech ID Assigned stable identifier: CultureMech:000223
2026-03-17T19:45:04.528097+00:00 normalize_media_names_to_snake_case.py NAME_NORMALIZED Normalized name from "Soil Extract Medium" to "soil_extract_medium" for consistent matching
2026-05-16T09:02:56.111063+00:00 migrate_legacy_fields.py MIGRATED_LEGACY_FIELDS curation_history.date->timestamp=1; references.reference_id->reference=2; category->lowercase=1
2026-05-16T09:11:01.323342+00:00 migrate_preparation_steps.py MIGRATED_PREPARATION_STEPS instruction->action+description for 9 step(s)
2026-08-30T00:58:30.968803+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_algae_score45_blends_soils.py RESOLVED_SCORE45_ALGAE_GRAPH UTEX prepares Soil Extract Medium by replacing 40 mL of a 1 L Bristol Medium batch with 40 mL filtered Soilwater: GR+ Medium supernatant.
2026-09-07T00:00:00-07:00 repair_utex_a_bg11_score30.py LINKED_UTEX_A_BG11_SCORE30 Added or refreshed reciprocal parent-child link for algae/soil_extract_sodium_metasilicate_medium.yaml.
2026-09-13T00:00:00-07:00 repair_utex_algae_score10.py NORMALIZED_UTEX_SOIL_EXTRACT_SOURCE_SCORE10 Copied the UTEX source identity from references and the original utex-import event into the structured sources slot recognized by review scoring.