Description
Specifications Table
Product Name – Nessler’s Reagent LR
Quantity/Pack Size – 100 ml
Form – Liquid
Grade – LR (Laboratory Reagent)
Application – Ammonia detection, qualitative analysis
Product Overview
Nessler’s Reagent LR is a highly sensitive alkaline solution designed for the detection and estimation of ammonia and ammonium ions in aqueous samples. This laboratory-grade reagent contains mercury(II) iodide and potassium iodide in a potassium hydroxide base, forming a complex that reacts with ammonia to produce a distinctive yellow-to-brown coloration. The intensity of the color is proportional to the ammonia concentration, enabling semi-quantitative analysis when used with standard colorimetric methods. The LR grade ensures minimal impurities, providing consistent and reliable results for routine lab applications. Its stability under standard storage conditions makes it a practical choice for long-term use in analytical procedures. The reagent is particularly effective in low-concentration ammonia detection, where precision is critical. As a ready-to-use liquid formulation, it eliminates the need for preparation, saving time in experimental workflows. Compatibility with most glassware and standard lab equipment further enhances its versatility in chemical testing protocols.
FAQs
1. What is the shelf life of Nessler’s Reagent LR when stored properly?
When stored in a tightly sealed container away from light and moisture at room temperature, Nessler’s Reagent LR typically retains its effectiveness for 12–24 months. Over time, the reagent may develop a slight precipitate, which can be filtered if necessary before use.
2. Can this reagent be used for quantitative ammonia analysis?
While Nessler’s Reagent LR is primarily used for qualitative detection, it can support semi-quantitative analysis when combined with a spectrophotometer or color comparison charts. For precise quantification, calibration with known ammonia standards is recommended.
3. Is this reagent compatible with plastic containers for storage?
The reagent is best stored in glass containers, as prolonged contact with certain plastics may lead to degradation or contamination. If plastic must be used, opt for HDPE or PP containers tested for chemical resistance to alkaline solutions.
4. What safety precautions should be taken while handling Nessler’s Reagent LR?
Due to its mercury content, this reagent is toxic and should be handled with gloves, goggles, and in a well-ventilated area or fume hood. Avoid inhalation or skin contact, and dispose of waste according to local hazardous material regulations.
5. Are there alternatives to Nessler’s Reagent for ammonia testing?
Alternatives include phenol-hypochlorite methods, ion-selective electrodes, or ammonia test strips, though these may vary in sensitivity and specificity. Nessler’s Reagent remains a cost-effective choice for rapid visual detection in many lab settings.
