Specifications
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Capacity: 300 mL.
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Material: Typically borosilicate glass (Type I, Class A glassware).
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Bottle dimensions: e.g., diameter ~ 69 mm, height ~ 165 mm in one model.
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Neck / closure: Ground-glass stopper or “penny-head” / robotic glass stopper that provides a seal to prevent air ingress.
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Special design: The shoulder/mouth is shaped to help expel air and allow a proper water seal when the sample is filled and incubated.
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Intended use: For the five-day BOD test (e.g., in standards such as Standard Methods for the Examination of Water and Wastewater) which requires bottles of 300 mL capacity or larger.
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Others: Some models may include a white-screen printed label area for sample ID.
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