For a limited time, save up to 24% on our best-selling protein biology essentials. Whether you are preparing proteins, conducting assays, performing electrophoresis, or running Western blotting experiments, we have you covered with our best-selling, high-quality products.
Take advantage of exclusive savings valid until 30 June 2026. Use promo code 27929 when purchasing.*
Explore our special offer categories:
Protein Preparation:
Easily extract, purify, clean up, and concentrate your proteins of interest with our kits, reagents, and devices.
Protein Assays:
We offer a variety of assay reagents, kits, and standards for protein quantitation by fluorescent or colorimetric detection with fluorometers, spectrophotometers, and plate readers.
Protein Electrophoresis:
Our portfolio of high-quality protein electrophoresis products unites gels, gel tanks, protein gel handcast systems, stains, molecular weight markers and standards and running buffers.
Western Blotting:
Boost your productivity with Western blotting reagents and tools designed for efficient high-quality data generation.
Thermo Scientific™ Spectra™ Multicolor Broad Range Protein Ladder
Thermo Scientific™ Spectra Multicolor Broad Range Protein Ladder is a 4-color protein standard containing 10 prestained proteins (10 to 260 kDa) for use as size standards in gel electrophoresis and Western blotting.
Thermo Scientific™ Halt™ Phosphatase Inhibitor Single-Use Cocktail
Stabilize serine, threonine and tyrosine phosphorylation of proteins in cells and tissues with this cocktail of phosphatase inhibitors.
Thermo Scientific™ Slide-A-Lyzer™ G3 Dialysis Cassettes, 3.5K MWCO
Thermo Scientific Slide-A-Lyzer™ G3 Dialysis Cassettes facilitate the rapid and trouble-free dialysis of sample volumes from 0.5 to 125 mL. Unlike standard flat tubing, these innovative devices do not require knots or clips that can lead to leaking and sample loss.
Thermo Scientific™ Slide-A-Lyzer™ G3 Dialysis Cassettes, 10K MWCO
Thermo Scientific Slide-A-Lyzer™ G3 Dialysis Cassettes facilitate the rapid and trouble-free dialysis of sample volumes from 0.5 to 125 mL. Unlike standard flat tubing, these innovative devices do not require knots or clips that can lead to leaking and sample loss.
Thermo Scientific™ Spectra™ Multicolor High Range Protein Ladder
A mixture of eight blue-, green- and orange-stained proteins (40 to 300kDa) for use as size standards for high MW proteins in gel electrophoresis and Western blotting.
Thermo Scientific™ Subcellular Protein Fractionation Kit for Cultured Cells
Enrich for cultured cell-specific cytoplasmic, membrane, nuclear soluble, chromatin-bound and cytoskeletal proteins in less than 3 hours.
Thermo Scientific™ Halt™ Protease and Phosphatase Inhibitor Cocktail, EDTA-free (100X)
Prevent protein degradation and stabilize phosphorylation with this all-in-one cocktail of protease and phosphatase inhibitors.
Thermo Scientific™ Pierce™ Protein-Free Blocking Buffer
Pierce Protein-Free Blocking Buffer is a non-protein compound that provides effective blocking for membrane-based and plate-based protein detection methods, resulting in extremely low background.
Thermo Scientific™ Restore™ Western Blot Stripping Buffer
Safely and effectively remove primary and secondary antibodies from nitrocellulose and PVDF membranes to allow chemiluminescent Western blots to be reprobed.
Thermo Scientific™ SuperBlock™ Blocking Buffer
SuperBlock Blocking Buffer is an optimized solution containing a single purified glycoprotein that provides incredibly fast and effective blocking for ELISA, IHC, and western blot analysis.
Thermo Scientific™ StartingBlock™ Blocking Buffer
StartingBlock Blocking Buffer is a single purified protein for fast blocking of western blots and ELISA assays.
Thermo Scientific™ PageRuler™ Plus Prestained Protein Ladder, 10 to 250 kDa
Thermo Scientific™ PageRuler Plus Prestained Protein Ladder is a mixture of nine (9) blue-, orange- and green-stained proteins (10 to 250 kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.
Thermo Scientific™ Pierce™ BCA Protein Assay Kits
The Pierce BCA Protein Assay Kit is a high-precision, detergent-compatible protein assay for determination of protein concentration. Pierce BCA reagents provide accurate determination of protein concentration with most sample types encountered in protein research.
Thermo Scientific™ Zeba™ Spin Desalting Columns, Plates, and Cartridges, 7K MWCO, 0.5–100 mL
Perform high-throughput protein recovery (7K MWCO) and sample desalting for mass spectrometry, HPLC, capillary electrophoresis, metabolite screening, and assay development with ready-to-use Thermo Scientific Pierce Zeba desalting chromatography columns, plates, and cartridges.
Thermo Scientific™ Micro BCA™ Protein Assay Kit
Special 3-component version of our popular BCA Reagents to measure total protein concentration of dilute protein solutions (0.5 to 20 micrograms/mL).
Terms and Conditions
*This promotion is open to customers in Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Norway, Portugal, Spain, Sweden, Switzerland, The Netherlands, and the United Kingdom only (excluding Northern Ireland). Offer is only valid for qualifying orders received by Thermo Fisher Scientific between 01.01.2026 and 30.06.2026 23:59 CEST or until promo supplies are depleted, whichever comes first. To be eligible to receive the discount, customers must include the promotional code specified above (27929). It must be presented at the time of order to get the discount. The promotional code can be used more than once. For a list of qualifying products, refer to this page. Offer limited to qualifying products only. This promotion cannot be combined with other discounts or promotions. Offer void where prohibited, licensed or restricted by federal, state, provincial, or local laws or regulations, or by agency/institutional policy. Other restrictions may apply. MBD (Oxoid) items are not eligible in Ireland and outside of European countries.