Lohan Tech LH-CL-K11 Chloride Ion Quick Test Kit
| Brand | Lohan Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | LH-CL-K11 |
| Pricing | Available Upon Request |
Overview
The Lohan Tech LH-CL-K11 Chloride Ion Quick Test Kit is a field-deployable, colorimetric analytical system engineered for rapid, on-site quantification of chloride ion (Cl⁻) concentration in aqueous environmental samples. It operates on the principle of silver nitrate–based argentometric reaction, where chloride ions react with standardized silver nitrate reagent to form insoluble silver chloride precipitate; subsequent color development—via proprietary chromogenic coupling agents—yields a stable, intensity-proportional hue across a defined concentration range. Designed specifically for emergency response, mobile environmental monitoring, and decentralized water quality screening, the kit eliminates dependence on laboratory infrastructure, power supply, or trained analytical personnel. Its architecture complies with fundamental method validation concepts outlined in ISO 9001–certified manufacturing practices and aligns with the functional intent of EPA Method 325.1 (for field screening) and ASTM D512–22 (Standard Test Method for Chloride Ion in Water), though it is not certified as a primary reference method.
Key Features
- Visual Colorimetric Readout: Integrated calibrated color scale printed directly onto the test tube label enables immediate semi-quantitative assessment without instrumentation—results interpretable within 90 seconds post-reaction.
- Uniform Chromogenic Response: Precision-molded polypropylene test tubes ensure consistent reagent dispersion and sedimentation kinetics, minimizing inter-batch variability and enhancing visual discrimination between adjacent concentration bands.
- Field-Optimized Workflow: Single-step addition protocol eliminates pipetting, dilution, or timing dependencies—sample introduction, reagent mixing, and stabilization occur sequentially in one sealed vessel.
- Operator-Neutral Design: No formal chemistry training required; intuitive workflow validated across non-specialist users in municipal utility field crews, disaster response teams, and rural water committees.
- Stable Shelf Life & Environmental Resilience: Vacuum-sealed aluminum foil pouches protect reagents from moisture, UV exposure, and thermal degradation—shelf life exceeds 24 months at ambient storage (15–30 °C); performance verified under cyclic humidity (30–85% RH) and transport vibration per ISTA 2A standards.
Sample Compatibility & Compliance
The LH-CL-K11 is validated for use with raw surface water, treated drinking water, groundwater, wastewater effluent, and stormwater runoff. Turbidity up to 50 NTU and residual chlorine ≤2 mg/L do not interfere with endpoint color formation. High concentrations of sulfide (>0.5 mg/L), bromide (>10 mg/L), or iodide (>2 mg/L) may cause overestimation and require pre-treatment per manufacturer’s technical bulletin. While not intended for regulatory reporting under US EPA or EU WFD compliance frameworks, the kit meets internal QA/QC requirements for preliminary triage, leak detection in distribution networks, and real-time feedback during desalination pretreatment monitoring. All reagents are non-hazardous per GHS classification and fully compliant with UN TDG Class 9 transport regulations.
Software & Data Management
As a standalone visual assay system, the LH-CL-K11 does not incorporate digital hardware or embedded firmware. However, Lohan Tech provides optional companion tools—including a free Android/iOS application (LH-Scan) that uses smartphone camera calibration and machine vision algorithms to digitize color matches against NIST-traceable RGB reference standards. The app supports GLP-compliant data logging: timestamp, GPS coordinates, operator ID, photo capture of result, and export in CSV or PDF formats compatible with LIMS integration. Audit trails comply with FDA 21 CFR Part 11 requirements when used with enterprise authentication modules.
Applications
- Rapid assessment of chloride intrusion in freshwater aquifers following saltwater encroachment events
- On-the-spot verification of de-icing chemical residue in roadside runoff prior to discharge
- Pre-screening of industrial cooling tower blowdown to prevent stress corrosion cracking in stainless steel piping
- Emergency evaluation of drinking water sources post-flood or infrastructure failure
- Training and capacity-building for community-level water safety planning in resource-limited settings
FAQ
What is the measurable chloride concentration range?
The standard LH-CL-K11 kit covers 0–500 mg/L Cl⁻ in a single test range, with visual resolution of ±25 mg/L increments.
Can results be correlated to laboratory-grade ion chromatography data?
Yes—interlaboratory validation studies (n=47 sites) show R² = 0.96 against IC reference methods for samples below 300 mg/L Cl⁻; deviations increase above 400 mg/L due to precipitation saturation effects.
Is calibration verification required before each use?
No external calibration is needed; each kit includes a control strip with pre-defined reference colors traceable to CIE LAB color space standards.
How should used test tubes be disposed?
Spent tubes contain low-concentration silver compounds—dispose as non-hazardous solid waste per local municipal guidelines; no special heavy metal handling required.
Does the kit support quantitative reporting for regulatory submissions?
It is classified as a screening tool per ISO/IEC 17025:2017 Annex B; confirm jurisdiction-specific acceptance with your regulatory authority prior to submission.
