DWK 209548 WHEATON Leak Resistant Bottle, 250mL, Natural, HDPE, 43-410

The WHEATON® 209548 is a 250 mL natural HDPE wide-mouth bottle supplied with a polypropylene screw closure. Its linerless double-seal design, non-drip pour lip, and defined packaging make it a practical container for compatible laboratory liquids.

Successful selection depends on more than capacity. The closure, liquid chemistry, temperature, exposure time, cleanliness requirements, and handling conditions must all be appropriate for the intended application.

Capacity interpretation: The 8 oz entry is the manufacturer's size designation, not an exact conversion of 250 mL. No brim capacity, recommended working-fill volume, or volumetric accuracy is established in the reviewed item data.

The manufacturer describes a linerless double-seal closure. This differs from a bottle that depends on a separately specified foam or film liner. Preserve the matched bottle-and-cap combination when evaluating sealing performance.

The 43-410 thread designation should not be treated as proof that any cap with the same designation reproduces the original seal. Confirm replacement-cap suitability with DWK rather than relying on thread fit alone.

The molded bead provides a location for a shrink band. A bead alone is not a tamper-evident seal, and the reviewed 209548 configuration does not identify a shrink band as included.

DWK's bottle-family literature references pressure testing including 95 kPa and states that the leakage results are based on water. It also instructs customers to evaluate leak resistance with their specific liquids and storage or transport conditions.

The practical qualification question is whether the supplied bottle and cap maintain the required containment with the actual contents, fill level, closure procedure, orientation, time, and temperature cycle.

The bottle and cap use different polymers. Screen the proposed contents against HDPE and polypropylene, including concentration, contact temperature, exposure duration, and any mixed formulation.

DWK's compatibility calculator provides separate polymer ratings at 20°C and 50°C. It is a screening resource, not a complete filled-package qualification or proof of sample stability.

Review DWK's Chemical Compatibility Calculator

Sample-quality checkpoint: Determine whether the method also requires extractables, adsorption, permeation, light-protection, or cleanliness data. No analytical-recovery or universal chemical- compatibility claim is added for this bottle.

The product page and manufacturer item files state HDPE suitability for freezing at -100°C. Separately, DWK's general resin guide lists -20°C as the lower end of its generic polypropylene temperature range.

These statements describe different levels of information and do not establish a complete low-temperature protocol for the filled bottle and supplied PP cap. Obtain application-specific confirmation for the intended freezer temperature, headspace, handling, and freeze-thaw cycle.

Read DWK's general plastic resin guidance

Catalog 209548 is the 72-count configuration, with an inner-pack quantity of 12 and an included polypropylene cap. The family description also discusses bulk formats with bottles and closures bagged separately.

The bulk-format references to double bagging, twist ties, and reduced particulate should not automatically be applied to this laboratory-pack item. Confirm the exact supplied packaging if bag layers, closure presentation, or material-transfer controls are purchasing requirements.

The reviewed manufacturer records do not establish a supplied sterile designation, sterility assurance level, endotoxin limit, cleanroom class, or quantified particle-release specification for 209548.

Blank fields in a product-information file are not certifications. Neither leak resistance nor reduced- particulate packaging language establishes sterile or aseptic suitability.

DWK identifies primary-receptacle transport applications for this bottle family. That does not certify an assembled shipment containing a particular chemical or specimen.

For example, U.S. Category B infectious-substance rules require a primary receptacle, secondary packaging, and rigid outer packaging. Liquid shipments have additional containment and absorbent requirements; air shipments include a 95 kPa pressure-differential requirement for the primary receptacle or secondary packaging.

The responsible shipper must determine the classification and complete packaging requirements for the contents and transport mode. Review 49 CFR 173.199 .

• Inspect the assembly: Check for deformation, cracks, damaged threads, sealing-surface defects, and contamination.
• Control the closure: Keep the matched cap and sealing surfaces clean; use an approved closure procedure.
• Define the fill: Establish the working volume and headspace for the actual contents and temperature conditions.
• Verify containment: Qualify the filled assembly for the intended orientation, storage duration, and handling.
• Maintain identification: Label contents and apply the laboratory's tracking and segregation requirements.
• Control reuse: Approve cleaning and reuse only when supported by the application and manufacturer guidance; do not assume an unlimited reuse life.

The manufacturer's 2026 setup file lists room-temperature shipping and storage conditions for the supplied product and records shelf life as N/A. That does not establish the storage life of a filled sample or an indefinite service-life guarantee.

Source basis: Product specifications were cross-checked against manufacturer-supplied product-information and 2026 item-setup records. General polymer guidance and regulatory references are identified separately. Application checkpoints are facility-selection guidance, not additional product certifications.