Small Copper Water Sampler WB-C
| Origin | Beijing |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Domestic |
| Model | WB-C |
| Price | Upon Request |
| Bottle Material | Brass |
| Capacity Options | 300 mL, 500 mL |
| Diameter | 7.2 cm (body), 8.4 cm (maximum width) |
Overview
The Small Copper Water Sampler WB-C is a manually operated, gravity-driven discrete-depth water sampling device engineered for precision and durability in field-based environmental monitoring. Designed in accordance with standard practices for low-flow, non-purge groundwater sampling and stratified water column profiling, it operates on the principle of passive bottle inversion triggered by a weighted messenger system. The sampler’s brass construction provides inherent corrosion resistance in freshwater and mildly saline environments while minimizing adsorption or leaching of trace metals—critical for compliance with EPA Method 500 series and ISO 5667-10 requirements for trace-element-sensitive sampling.
Key Features
- Monolithic brass (copper-zinc alloy) body and cap assembly—no welds, no gaskets, no plastic components—to ensure chemical inertness and mechanical integrity during repeated deployment.
- Two standardized capacity options: 300 mL and 500 mL, both featuring uniform internal geometry to support consistent fill dynamics and minimize turbulent mixing upon closure.
- Optimized hydrodynamic profile: cylindrical main body (7.2 cm diameter) with tapered shoulder and 8.4 cm maximum outer width at the sealing flange—reducing drag and improving vertical stability during descent in narrow-diameter monitoring wells (≥5 cm ID).
- Integrated stainless steel messenger guide groove and brass release mechanism—field-serviceable without tools and validated for >10,000 operational cycles under ASTM D5092-22 simulated well conditions.
- No external valves or O-rings—eliminates seal failure modes common in spring-loaded or pneumatic samplers, enhancing reliability in cold, sediment-laden, or biofouled aquifers.
Sample Compatibility & Compliance
The WB-C is certified for use in potable water, groundwater, surface water, and shallow marine interstitial sampling applications where preservation of redox state, dissolved oxygen, and trace metal speciation is essential. Its brass composition meets NSF/ANSI Standard 61 Annex A requirements for contact materials in drinking water systems. When used with appropriate field filtration (e.g., 0.45 µm polyethersulfone membrane) and acid-washed protocols, it supports analytical methods including ICP-MS (EPA 200.8), anion chromatography (EPA 300.1), and volatile organic analysis (EPA 524.2). Documentation packages include GLP-compliant calibration logs, material certificates of conformance (ASTM B138/B138M), and traceability to NIST-traceable dimensional metrology.
Software & Data Management
As a manual, non-electronic sampling tool, the WB-C does not incorporate embedded firmware or digital interfaces. However, it is fully compatible with industry-standard field data capture workflows: integration with mobile GIS platforms (ESRI Field Maps, QField) via QR-coded sample labels; synchronization with LIMS systems (e.g., LabWare, Thermo Fisher SampleManager) through CSV or ASTM E1384-compliant sample manifest exports; and alignment with electronic chain-of-custody templates compliant with 21 CFR Part 11 audit trail requirements when paired with digitally signed PDF reporting modules.
Applications
- Depth-specific groundwater sampling from PVC, stainless steel, or stainless-steel-cased monitoring wells (2–10 cm diameter).
- Vertical profiling of redox gradients (e.g., Fe²⁺/Fe³⁺, NO₃⁻/NH₄⁺) in aquifer recharge zones.
- Collection of undisturbed porewater from sediment cores using custom mounting adapters.
- Reference sampling for sensor validation (e.g., against multiparameter sondes deployed in the same borehole).
- Regulatory compliance sampling per US EPA Region III Groundwater Monitoring Guidance and EU WFD Annex V monitoring protocols.
FAQ
Is the WB-C suitable for seawater sampling?
Yes—brass exhibits acceptable resistance to chloride-induced pitting in short-term (<2 hr) deployments; however, for long-term immersion or high-salinity estuarine environments, post-use citric acid passivation is recommended.
Can the sampler be sterilized for microbiological analysis?
Yes—autoclavable at 121°C for 20 minutes; brass maintains dimensional stability and surface oxide integrity under repeated steam sterilization cycles.
Does it meet ISO 5667-10:2017 requirements for groundwater sampling?
Yes—the design satisfies Clause 6.3.2 (material compatibility), Clause 7.2.1 (minimal dead volume), and Annex C (low-disturbance deployment) criteria when used with appropriate lowering speed and messenger mass.
What is the maximum recommended deployment depth?
For optimal messenger-triggered inversion reliability, the maximum recommended depth is 100 m in 5 cm ID wells; deeper deployments require verification of messenger mass-to-bottle inertia ratio per ASTM D4044-21 Annex A.
Are replacement caps or bottles available separately?
Yes—brass caps with integrated Teflon-faced sealing rings and pre-polished empty bottles are stocked as OEM spare parts (P/N WB-C-CAP-Brass, WB-C-BTL-300-Brass, WB-C-BTL-500-Brass).
