BOD Bottle

Product Code : SCL-CLE-11930

The StemAids BOD Bottle is a specialized laboratory vessel engineered for the incubation of water samples during the Biological Oxygen Demand (BOD) test. This critical environmental analysis measures the amount of dissolved oxygen consumed by microorganisms as they break down organic matter. Manufactured to ISO 4796 standards, these bottles feature a unique flared-mouth design and a precision-ground glass stopper, specifically created to form an airtight water seal that prevents atmospheric oxygen from contaminating the sample during the 5-day incubation period.

Technical Specifications

Key Pedagogical & Laboratory Outcomes

• Ecological Interface: Facilitates student understanding of Water Pollution & Eutrophication. Learners identify how organic waste loads affect the dissolved oxygen levels in aquatic ecosystems.
• Redox Quantification: Enables the Winkler Titration method; learners apply chemical reagents to the incubated sample to calculate the final O2 concentration (mg/L).
• Atmospheric Isolation Analysis: Supports the analysis of "Gas Diffusion"; students evaluate the importance of the pointed stopper design, which displaces all air when inserted, ensuring no bubbles are trapped inside.
• Metabolic Evaluation: Allows students to evaluate the "Standard 5-Day Test" (BOD5); by comparing initial and final oxygen levels, learners determine the biochemical health of wastewater or stream samples.

Procedural Optimization (The Water Seal)

To ensure the integrity of the test, the flared mouth of the bottle is designed to hold a small amount of distilled water after the stopper is inserted. This water seal acts as a physical barrier against air ingress. Often, a plastic "BOD Cap" is placed over the flared neck to prevent the seal water from evaporating during the 20?C incubation period.

International Logistics & Compliance

StemAids ensures comprehensive OEM readiness for global institutional procurement:

• Packaging: Export-grade, high-protection packaging. Bottles are packed in sets (typically 24 or 36) with stoppers individually wrapped or secured to prevent "seizing" or chipping during maritime transit.
• Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a standardized SOP for BOD5 testing.
• Durability: Borosilicate 3.3 glass is resistant to the corrosive chemicals used in the Winkler method (like concentrated sulfuric acid and alkaline iodide), maintaining its transparency for automated O2 probe readings.

Direct OEM Sourcing Advantages

Procuring StemAids BOD Bottles directly ensures vertical manufacturing control:

• Precision Ground Stopper Joints: Direct oversight of the diamond-grinding process ensures that each stopper is perfectly matched to its bottle, providing a leak-proof seal essential for valid BOD results.
• Robotic Compatibility: Our bottles are manufactured with a uniform radius and height to ensure they fit perfectly into automated BOD analyzer carousels.
• Direct Factory Inventory: Guaranteed availability of Numbered Sets, allowing lab managers to track dozens of samples simultaneously without labeling errors.
• Quality Assurance: Every batch is "air-entrapment tested" to ensure the pointed stopper design effectively removes 100\text{%} of air bubbles upon closure.