ASTM E1200-24 PDF

Overview

ASTM E1200-24: Standard Practice for Preserving Zooplankton Samples provides comprehensive guidelines for the collection, handling, and preservation of zooplankton samples in aquatic environments. Issued by ASTM International, this standard outlines the procedures for using various chemical preservatives such as formaldehyde, ethanol, glutaraldehyde, Lugol’s iodine solution, and vinegar (acetic acid) to ensure the integrity of zooplankton specimens for scientific, environmental, and regulatory analysis. Preserving zooplankton samples with recommended chemicals plays a critical role in aquatic research, ecological monitoring, and water quality assessment.

Key Topics

• Preservative Selection: The standard covers the appropriate use of preservatives based on the intended duration of storage and the nature of zooplankton specimens.
  • Permanent Preservation: Calcium carbonate buffered formalin (3-5%) is recommended as a long-term preservative for most zooplankton.
  • Intermediate Preservation: Lugol’s iodine solution can preserve samples for up to one year.
  • Temporary Preservation: 30% ethanol, 30% glutaraldehyde, or 25% vinegar (or 3% acetic acid solution) are suitable for short-term storage.
  • Soft-bodied Specimens: 25% vinegar solution is preferred for sensitive planktonic coelenterates.
• Sample Handling: Details on the preparation and dilution of preservatives, as well as storage recommendations, including keeping samples in dark or closed conditions to minimize degradation.
• Safety and Compliance: Users are reminded of safety, health, and environmental considerations when handling chemicals. Relevant regulatory requirements and best laboratory practices should always be followed.
• Referenced Documents: Connections to related ASTM standards such as D1129 for water terminology and D1193 for reagent water ensure clarity and consistency in sample preservation.

Applications

The procedures outlined in ASTM E1200-24 facilitate reliable collection and preservation of zooplankton for numerous practical applications:

• Aquatic Ecosystem Monitoring: Preserved samples are vital for assessing species composition, population dynamics, and ecosystem health.
• Water Quality Testing: Accurate preservation of zooplankton supports water testing programs for lakes, rivers, and reservoirs.
• Environmental Research: Laboratories and research institutions rely on standardized methods for comparing data across studies and regulatory bodies.
• Regulatory Compliance: Following this standard helps organizations meet environmental monitoring and reporting requirements.
• Educational and Taxonomic Studies: Universities and scientific institutions use preserved specimens for teaching and biodiversity assessments.

Related Standards

The following ASTM standards are often referenced alongside ASTM E1200-24 to ensure robust water sample handling and analysis:

• ASTM D1129: Terminology Relating to Water
• ASTM D1193: Specification for Reagent Water

Adherence to these and other relevant standards ensures methodological consistency and data reliability in all areas of aquatic biology and water resource management. For the official document and detailed procedures, users are encouraged to consult the current version available through ASTM International.

Keywords: zooplankton preservation, ASTM E1200-24, formaldehyde, ethanol, glutaraldehyde, Lugol’s iodine solution, vinegar, aquatic sample preservation, water quality, environmental monitoring