1_2_erdschreiber_medium

CultureMech:000004 algae COMPLEX LIQUID
Original name: 1/2 Erdschreiber Medium

Overview

External ontology
UTEX:one-half-erdschreibers-medium (source link unavailable) — 1/2 Erdschreiber's Medium
Applications
  • Algae cultivation
  • Phytoplankton culture
  • Microalgae research
Notes
UTEX prepares this dilution by mixing prepared Erdschreiber's Medium with sterile distilled water in a 1:1 ratio for 15 ppt salinity.

Composition

flowchart LR
    CultureMech_000004["1_2_erdschreiber_medium"]
    ing0_dH2O["dH2O"]
    CultureMech_000004 --> ing0_dH2O
    CHEBI_15377["CHEBI:15377"]
    ing0_dH2O -.-> CHEBI_15377

Ingredients (1)

# Ingredient Concentration Ontology Notes
1 dH2O
H2O 18.015 g/mol
500 ML_PER_L CHEBI:15377
water
 UTEX lists 500 mL sterile dH2O per 1 L final medium.

Preparation

  1. Combine prepared Erdschreiber's Medium with sterile dH2O.
  2. Store at refrigerator temperature.

Solutions

Erdschreiber's Medium

Dose: 500 ML_PER_L

CultureMech:000167

UTEX lists 500 mL prepared Erdschreiber's Medium per 1 L final medium.

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: one-half-erdschreibers-medium, URL: https://utex.org/products/one-half-erdschreibers-medium
2026-03-13T06:18:52.809023Z culturemech-id-assigner-v1.0 Assigned CultureMech ID Assigned stable identifier: CultureMech:000004
2026-03-17T19:45:03.789163+00:00 normalize_media_names_to_snake_case.py NAME_NORMALIZED Normalized name from "1/2 Erdschreiber Medium" to "1_2_erdschreiber_medium" for consistent matching
2026-05-16T09:02:55.716471+00:00 migrate_legacy_fields.py MIGRATED_LEGACY_FIELDS curation_history.date->timestamp=1; references.reference_id->reference=2; category->lowercase=1
2026-05-16T09:11:00.913816+00:00 migrate_preparation_steps.py MIGRATED_PREPARATION_STEPS instruction->action+description for 9 step(s)
2026-08-30T00:58:30.422429+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_algal_blends.py RESOLVED_UTEX_ALGAL_BLEND_GRAPH UTEX prepares this dilution by mixing prepared Erdschreiber's Medium with sterile distilled water in a 1:1 ratio for 15 ppt salinity.
2026-10-10T21:33:31.850583+00:00 codex CURATED_UTEX_PREPARED_BLEND_CONCENTRATION_EVIDENCE Retain prepared-medium addition amounts with exact source-URL/snippet evidence. No numeric changes, ontology repairs, linked-recipe certification, or taxa-media associations. Preserve the quarter-strength source ratio conflict explicitly.