Laboratory & Chemical
300 ml BOD bottles in borosilicate glass with tapered ground-glass stopper and flared water-seal mouth, for BOD and dissolved-oxygen testing.
Specification
Product Knowledge
Background, typical uses and selection points for this product. We can send model drawings, technical data and samples to support your evaluation.
The BOD bottle is built for one of the standard tests of water quality: measuring how much oxygen microorganisms consume in a water sample over a fixed period, typically five days at 20 °C. The test depends on keeping atmospheric oxygen out, so the bottle is designed around an airtight, bubble-free seal.
Its tapered ground-glass stopper displaces air as it goes in, and the flared mouth holds a little water around the stopper as a seal during incubation.
BOD bottles are used for biochemical oxygen demand testing, wastewater and effluent analysis, dissolved-oxygen measurement and wider environmental monitoring. Typical buyers are municipal water and wastewater labs, industrial effluent labs, environmental contract labs, aquaculture operations, and university research and teaching labs. The 300 ml bottle is the standard format for the classic five-day test; smaller sizes suit reduced-volume methods and dissolved-oxygen sampling in the field.
Each bottle is borosilicate glass with a flared mouth and a tapered ground-glass joint, matched to a pennyhead or pointed stopper. Filling to overflowing and seating the stopper leaves no trapped air, and the flare forms a cup for the water seal. Bottle and stopper are numbered as a set so they stay together. Amber versions limit light-driven algal activity that would skew oxygen readings.
Fill the bottle completely and seat the stopper at an angle so no air bubble is trapped, since a single bubble can invalidate the result. Top up the flared cup with water to form the seal before incubating, and cover it with a cap if your method calls for it. Keep each numbered stopper with its own bottle, and incubate in the dark or use amber bottles.
We form the bottles from borosilicate glass, grind the joint and stopper together to a close matched fit, anneal the set and number it. Joint fit and leak-tightness are the critical production checks. Options include clear or amber glass, pennyhead or pointed stoppers, plastic overcaps for the water seal, and custom number sequences for lab tracking. Send us your quantity and stopper preference for a quote.
Customization
We specify the container, closure, decoration and transit packing as one package, so every part fits and arrives ready for your filling line.
Choose from standard sizes or request a custom capacity. We supply drawings with tolerances, label panel dimensions and nominal and brimful capacity.
We match caps, liners, pumps, droppers and stoppers to the neck finish and check the seal against your contents and filling process.
Flint, amber and colored glass, with frosting, spray coating, screen printing, hot stamping or labels. Material documentation is available on request.
Partitioned cartons, layer pads or bulk pallets, with shipping marks and pallet patterns planned for your route and warehouse.
Applications
Typical markets and uses. Tell us your contents, filling process and storage conditions and we will recommend the right model and components.
We confirm availability of the standard model, and review any changes to size, color, decoration or tooling for feasibility and lead time.
We send samples and specification sheets so you can check dimensions, component fit and finish before you place the order.
Your quotation covers packing design, shipping route, Incoterms and export documents, so landed cost is clear from the start.
Bulk Quote
Tell us the quantity, specifications and destination. We will reply with pricing, lead time, sample options and technical data for your chosen model.