Nickel Test Kit
Colorimetric test kit for quantitative determination of nickel concentrations in water samples using dimethylglyoxime chemistry.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Configured during quote
- SKU family
- CS-LH-WTK015
- Sizing
- 30.0 x 20.0 x 10.0 cm
- Ordering
- Online checkout and quote request available
- Category
- Water Test Kits
- Build notes
- Confirm accessories, station layout, and support needs before purchase
The Nickel Test Kit (Model LH2025) provides colorimetric analysis capabilities for quantitative determination of nickel concentrations in water samples. This kit utilizes established dimethylglyoxime-based chemistry to produce measurable color reactions proportional to nickel concentration, enabling field and laboratory screening of water quality parameters.
The system supports standard analytical workflows for environmental monitoring, industrial water quality assessment, and research applications requiring nickel quantification. The kit design accommodates direct sample analysis without complex sample preparation, making it suitable for routine screening protocols in various laboratory settings.
How It Works
The kit employs dimethylglyoxime (DMG) chemistry for selective nickel detection through formation of a characteristic colored complex. When nickel ions are present in solution, they react with dimethylglyoxime reagent to form a pink-red complex with specific absorption characteristics. The reaction typically requires pH adjustment to optimize complex formation and may involve oxidation steps to convert Ni(II) to higher oxidation states for enhanced color development.
The intensity of the resulting color is directly proportional to nickel concentration, following Beer-Lambert law principles. Spectrophotometric measurement at the characteristic absorption wavelength (typically around 445-470 nm) allows quantitative determination of nickel levels. The method provides selectivity through the specific chelation chemistry of dimethylglyoxime with nickel ions.
Features & Benefits
Product name
- Model No.
nickel test kit
- LH2025
Automation Level
- manual
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Industrial Hygiene
- Materials Science
- Pharmaceutical QC
Weight
- 0.26 kg
Dimensions
- L: 30.0 mm
- W: 20.0 mm
- H: 10.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Detection Method | Colorimetric analysis using dimethylglyoxime chemistry | Many portable kits use ion-selective electrodes or turbidimetric methods | Provides visual confirmation of results and enables both qualitative screening and quantitative measurement using standard spectrophotometry. |
| Sample Processing | Direct analysis of water samples with minimal preparation | Some methods require extensive sample digestion or extraction procedures | Reduces analysis time and minimizes contamination risks during sample handling and preparation steps. |
| Reagent Specificity | Dimethylglyoxime provides selective chelation with nickel ions | General metal indicators may show response to multiple metals | Offers higher selectivity for nickel determination with reduced interference from other transition metals commonly present in water. |
| Equipment Requirements | Compatible with standard UV-Vis spectrophotometers | Some methods require specialized instrumentation or electrodes | Utilizes commonly available laboratory equipment, reducing capital investment and training requirements for routine analysis. |
The Model LH2025 kit provides selective nickel determination using established dimethylglyoxime chemistry, offering good specificity for nickel analysis in aqueous samples. The colorimetric approach enables both field screening and laboratory quantification using standard spectrophotometric equipment commonly available in analytical laboratories.
Practical Tips
Prepare fresh calibration standards daily using the same water matrix as your samples to minimize matrix effects on color development.
Why: Matrix differences can affect reagent performance and color intensity, leading to systematic errors in quantification.
Allow adequate time for color development and measure all samples within the specified time window to ensure consistent results.
Why: Complex formation kinetics and color stability affect measurement accuracy and reproducibility between samples.
Store dimethylglyoxime reagent in amber bottles away from light and check for precipitation or color changes before use.
Why: Light exposure can degrade the reagent, reducing sensitivity and causing background color that interferes with measurements.
If color development is poor or inconsistent, verify pH conditions and reagent addition sequence according to the protocol.
Why: Proper pH and reagent mixing order are critical for optimal complex formation and color intensity.
Run blank and spiked samples with each batch to monitor reagent performance and identify potential contamination issues.
Why: Quality control samples help detect reagent degradation, contamination, or procedural errors that could compromise results.
Work in well-ventilated areas and avoid skin contact with dimethylglyoxime reagent, as it can cause sensitization reactions.
Why: Dimethylglyoxime is a potential skin sensitizer and respiratory irritant requiring appropriate handling precautions.
Setup Guide
What’s in the Box
- Dimethylglyoxime reagent solution (typical)
- pH buffer solution (typical)
- Nickel standard solution for calibration (typical)
- Oxidizing agent solution (typical)
- Sample preparation vessels (typical)
- Measurement cuvettes or test tubes (typical)
- Analytical procedure manual
- Calibration and QC guidelines
Warranty
ConductScience provides standard one-year manufacturer warranty covering reagent stability and kit component integrity, with technical support for analytical procedures and troubleshooting.
Compliance
References
Background reading relevant to this product:
What is the detection limit and linear range for nickel determination with this kit?
Specific detection limits and linear range depend on the reagent concentrations and measurement protocols provided in the LH2025 kit. Consult the product datasheet for validated performance specifications under standardized conditions. Typical dimethylglyoxime methods achieve detection limits in the 0.01-0.1 ppm range.
Which metals commonly interfere with nickel determination using dimethylglyoxime?
Iron, cobalt, and palladium can form colored complexes with dimethylglyoxime, potentially causing positive interferences. Copper and zinc may cause negative interference through competitive reactions. The kit protocol should include masking agents or separation steps to minimize these effects.
What sample pH range is optimal for nickel-dimethylglyoxime complex formation?
The nickel-dimethylglyoxime reaction typically requires alkaline conditions, with optimal pH around 8-9. The kit should include appropriate buffer solutions to maintain pH within the specified range for consistent color development and maximum sensitivity.
How long is the color development time, and how stable is the colored complex?
Nickel-dimethylglyoxime complexes typically develop within 5-15 minutes and remain stable for several hours under proper conditions. Consult kit documentation for specific timing requirements and measurement windows to ensure accurate quantification.
Can this method be used for saline or high ionic strength water samples?
High ionic strength can affect complex formation and color intensity. Sample dilution or matrix matching with standards may be necessary for accurate analysis of saline samples. Verify kit suitability for your specific matrix conditions.
What is the recommended spectrophotometric wavelength for measurement?
Nickel-dimethylglyoxime complexes typically exhibit maximum absorption around 445-470 nm. The kit documentation should specify the optimal wavelength for the particular reagent formulation and reaction conditions used.
How should kit reagents be stored, and what is their shelf life?
Store reagents according to manufacturer specifications, typically in cool, dark conditions. Dimethylglyoxime solutions are light-sensitive and may require refrigerated storage. Check expiration dates and reagent appearance before use to ensure reliable results.
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