AM Scientific

Qualigens Iodine Resublimed (SQ) is a highly purified, crystalline form of iodine, appearing as lustrous grey-black scales or granules, known for its distinct odor and easy sublimation into a violet vapor; it's a high-purity laboratory reagent (SQ means 'Special Quality') used in analysis and chemical synthesis, showing minimal impurities like bromine/chlorine and very low non-volatile matter, requiring careful handling due to potential health hazards, notes this IndiaMART page and this Certificate of Analysis. Description & Appearance

• Form: Crystalline scales, plates, or granules with a metallic sheen.
• Color: Greyish-violet to bluish-black or black.
• Odor: Characteristic sharp, pungent odor.
• Sublimation: Easily turns from solid to violet vapor (gas) with gentle heating, skipping the liquid phase (resublimation means it's purified multiple times). 

Key Properties

• High Purity: "SQ" (Special Quality) or AR (Analytical Reagent) indicates high purity, with low limits for impurities like bromide/chloride and non-volatile matter.
• Solubility: Slightly soluble in water but readily dissolves in alcohol, chloroform, ether, and iodide solutions.
• Assay: Typically 99.5% or higher purity. 

HiMedia's Kovac's Indole Reagent (R008) is a yellow liquid used in microbiology to detect if bacteria produce indole from tryptophan, indicated by a red ring forming at the top of the culture medium after adding the reagent, which contains p-dimethylaminobenzaldehyde, amyl alcohol, and hydrochloric acid, helping differentiate bacteria like E. coli (positive) from Enterobacter aerogenes (negative). Key Features & Use

• Purpose: Detects indole production, a key step in differentiating bacteria, especially members of the Enterobacteriaceae family.
• Mechanism: Microbes with tryptophanase break down tryptophan into indole; the reagent's p-dimethylaminobenzaldehyde reacts with indole to form a red color.
• Composition: Typically contains p-dimethylaminobenzaldehyde, amyl alcohol (or isoamyl alcohol), and concentrated hydrochloric acid.
• Positive Result: A red ring appears at the interface of the medium and the reagent layer.
• Negative Result: No red ring forms.
• Application: Used with tryptone broth cultures (e.g., 24-48 hours old) for microbial identification, not directly on clinical samples.
• Storage: Keep tightly closed, in a dry, well-ventilated place, away from heat, and store refrigerated (2-8°C) and protected from light to prevent degradation. 

Northman Ethanol Absolute, Analytical AR Grade (99%) is a high-purity, anhydrous (very low water content) ethyl alcohol (C2H5OHcap C sub 2 cap H sub 5 cap O cap H��2��5 �) used as a versatile solvent and reagent in laboratories for synthesis, analysis, cleaning, and as a base for cosmetics and sanitizers, packaged typically in 500ml bottles and manufactured in India. This colorless liquid is known for its consistency, quick evaporation, and reliability in scientific procedures, meeting stringent AR (Analytical Reagent) grade standardsKey Specifications: 

• Grade: Analytical Reagent (AR)
• Purity: 99% or higher (sometimes 99.9%)
• Chemical Formula: CH3CH2OHcap C cap H sub 3 cap C cap H sub 2 cap O cap H �3 �2 � or C2H5OHcap C sub 2 cap H sub 5 cap O cap H��2��5 �
• Appearance: Colorless liquid with a characteristic odor
• Packaging: Commonly 500 ml bottles
• Origin: Made in India 

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Based on the search results, "SRL 85473" refers to a laboratory chemical product, specifically Agar powder for tissue culture (500gm) manufactured by Sisco Research Laboratories Pvt. Ltd. (SRL). Product Description (SRL 85473):

• Product Name: Agar Powder for Tissue Culture
• Product Code: 85473
• Appearance (Colour): White to pale yellow powder
• Quantity: 500gm
• Application: Suitable for use in plant tissue culture and microbiology.
• Manufacturer: Sisco Research Laboratories Pvt. Ltd. (SRL)