--- product_id: 26668756 title: "Negative Stain Kit - Set of 3 30mL Microscope Stains - Congo Red, Hydrochloric Acid, Formalin Nigrosin Solution" brand: "aldon" price: "5380 kr" currency: ISK in_stock: true reviews_count: 1 category: "Aldon" url: https://www.desertcart.is/products/26668756-negative-stain-kit-set-of-3-30ml-microscope-stains-congo store_origin: IS region: Iceland --- # Enhances microscopic contrast 3x 30mL precision stains Includes safety data sheets Negative Stain Kit - Set of 3 30mL Microscope Stains - Congo Red, Hydrochloric Acid, Formalin Nigrosin Solution **Brand:** aldon **Price:** 5380 kr **Availability:** ✅ In Stock ## Summary > 🔬 See the unseen with precision and safety! ## Quick Answers - **What is this?** Negative Stain Kit - Set of 3 30mL Microscope Stains - Congo Red, Hydrochloric Acid, Formalin Nigrosin Solution by aldon - **How much does it cost?** 5380 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/26668756-negative-stain-kit-set-of-3-30ml-microscope-stains-congo) ## Best For - aldon enthusiasts ## Why This Product - Trusted aldon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Comprehensive safety data sheets ensure secure handling and storage - • **Lab-Ready Volume:** Ample quantity to run multiple experiments without interruption - • **Triple-Stain Power:** Three specialized 30mL solutions for versatile negative staining - • **Trusted by Experts:** Highly rated and regularly used in professional chemistry labs - • **Contrast Like a Pro:** Background staining boosts bacterial visibility without direct dyeing ## Overview The Negative Stain Kit includes three 30mL solutions—Congo Red, Hydrochloric Acid 1%, and Formalin-Nigrosin—designed to stain backgrounds rather than bacteria, enhancing microscopic contrast. Ideal for chemistry labs, it provides enough volume for multiple uses and comes with safety data sheets for proper handling. Perfect for professionals seeking reliable, high-visibility staining in their microbial research. ## Description A negative stain set colors the background of a smear rather than the bacteria (as a direct stain does). These stains have negatively charged functional groups so they can't bind directly to negatively charged bacteria. Kit Includes: 30ml Formalin-Nigrosin Solution 30ml Hydrochloric Acid 1% 30ml Congo Red 1% AQ DOT Info: Small quantity exemption 173.4 THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport onlyFor Laboratory Use Only. Not for drug, food or household use. Keep out of reach of children. For more information, refer to the Safety Data Sheet. Review: Five Stars - Great product. I use this in lab on a regular basis. ## Features - Chemical kit designed to perform a negative stain on multiple cultures - Negative stains dye the culture background rather than the bacteria themselves, enhancing visibility - Kit contains enough material to run several stains - Perfect kit for chemistry labs - Safety data sheets included to inform safe storage and maintenance of chemicals ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00U9QN5ZW | | Best Sellers Rank | #345,693 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #33 in Life Science Dyes, Fluorophores & Stains | | Brand | ALDON | | Color | clear or light-colored | | Customer Reviews | 4.0 4.0 out of 5 stars (20) | | Enclosure Material | Cardboard, Plastic, Glass | | Global Trade Identification Number | 00724832050148 | | Item Dimensions L x W x H | 6"L x 4"W x 2"H | | Item Weight | 0.2 Pounds | | Manufacturer | Innovating Science | | Manufacturer Part Number | IS5014 | | Model Number | IS5014 | | Objective Lens Description | Achromatic | | UPC | 724832050148 | ## Product Details - **Brand:** ALDON - **Color:** clear or light-colored - **Global Trade Identification Number:** 00724832050148 - **Item Weight:** 0.2 Pounds - **Manufacturer:** Innovating Science - **Material:** Cardboard, Plastic, Glass - **Objective Lens Description:** Achromatic - **Product Dimensions:** 6"L x 4"W x 2"H - **UPC:** 724832050148 ## Images ![Negative Stain Kit - Set of 3 30mL Microscope Stains - Congo Red, Hydrochloric Acid, Formalin Nigrosin Solution - Image 1](https://m.media-amazon.com/images/I/611E83dgqBL.jpg) ## Questions & Answers **Q: Can you please tell me the molarity of the hcl in this kit? thank you** A: The molarity of the acid is negligibly low. The exact molarity is difficult to calculate given the ethanol in the solution. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Five Stars *by S***S on May 19, 2016* Great product. I use this in lab on a regular basis. ## Frequently Bought Together - ALDON Innovating Science Negative Stain Kit - Set of 3 30mL Microscope Stains - Congo Red, Hydrochloric Acid, Formalin Nigrosin Solution - ALDON Innovating Science Complete Microscope Slide Stains Kit - 19 Chemicals in 30mL Dropper Bottles - Includes Vital Stains (7), Bacteria Stains (5), Gram Stains (7) & Instruction Manual - AmScope BS-50P-100S-22 Pre-Cleaned Blank Ground Edge Glass Microscope Slides and 100pc Pre-Cleaned Square Glass Cover Slips Coverslips --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/26668756-negative-stain-kit-set-of-3-30ml-microscope-stains-congo](https://www.desertcart.is/products/26668756-negative-stain-kit-set-of-3-30ml-microscope-stains-congo) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-24*