---
product_id: 118094659
title: "Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences"
brand: "cepham life sciences"
price: "S$234"
currency: SGD
in_stock: true
category: "Cepham Life Sciences"
url: https://www.desertcart.sg/products/118094659-coomassie-brilliant-blue-r-250-protein-stain-solution-1-l
store_origin: SG
region: Singapore
---

# Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences

**Brand:** cepham life sciences
**Price:** S$234
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences by cepham life sciences
- **How much does it cost?** S$234 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/118094659-coomassie-brilliant-blue-r-250-protein-stain-solution-1-l)

## Best For

- cepham life sciences enthusiasts

## Why This Product

- Trusted cepham life sciences brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Coomassie Brilliant Blue R-250 is one of the most common forms of coomassie dye, which is a key component of various colorimetric protein gel stains. Coomassie Brillant Blue R-250 staining solution is the fastest and easiest way to stain proteins on precast gels or other polyacrylamide protein gels. Coomassie R-250 and G-250 dyes are two chemical forms of a disulfonated triphenylmethane compound that is commonly used as the basis of stains for detection of proteins in gel electrophoresis and Bradford-type assay reagents for protein quantitation. The R-250 (red-tinted) form lacks two methyl groups that are present in the G-250 (green-tinted) form, which is also called colloidal coomassie dye. Typically, coomassie gel stains and protein assay reagents are formulated as very acidic solutions in 25 to 50% methanol. In acidic conditions, the dye binds to proteins primarily through basic amino acids (primarily arginine, lysine and histidine), and the number of coomassie dye ligands bound to each protein molecule is approximately proportional to the number of positive charges found on the protein. Protein-binding causes the dye to change from reddish-brown to bright blue (absorption maximum equals 595 nm). Features: ? Easy detection?Develops intensely colored complexes with proteins ? High sensitivity?Can determine as little as 0.5 µg/cm2 of protein present in a gel matrix ? Reversible staining?Anion of Coomassie Brilliant Blue formed in the acidic staining medium combines with the protonated amino groups of proteins by electrostatic interaction; resulting complex is reversible under the proper conditions ? Differentiation between bound and unbound dye?When dissolved in 0.01M citrate buffer at pH 3.0, has an absorption maximum at 555nm; protein-dye complex is characterized by a peak slightly broader than that of the free dye with a maximum at 549 nm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DPVHRNW |
| Brand | Cepham Life Sciences |
| Brand Name | Cepham Life Sciences |
| Container Type | Bottle |
| Item Form | Gel |
| Item Volume | 1 liters |
| Manufacturer | Cepham Life Sciences |
| Model Number | R 250 |
| Package Information | Bottle |
| Part Number | 10492 |
| Unit Count | 33.81 Fluid Ounces |
| Volume | 1 liters |

## Product Details

- **Brand:** Cepham Life Sciences
- **Item Form:** Gel
- **Item Volume:** 1 Liters
- **Manufacturer:** Cepham Life Sciences
- **Package Information:** Bottle

## Images

![Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences - Image 1](https://m.media-amazon.com/images/I/31GMhpE2DfL.jpg)
![Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences - Image 2](https://m.media-amazon.com/images/I/71b2pz8E9SL.jpg)
![Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences - Image 3](https://m.media-amazon.com/images/I/81EqJtoEMOL.jpg)
![Coomassie Brilliant Blue R-250 Protein Stain Solution - 1 L -from Cepham Life Sciences - Image 4](https://m.media-amazon.com/images/I/6171cK1pKWL.jpg)

---

## 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.sg/products/118094659-coomassie-brilliant-blue-r-250-protein-stain-solution-1-l](https://www.desertcart.sg/products/118094659-coomassie-brilliant-blue-r-250-protein-stain-solution-1-l)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-08-23*