
Invitrogen™ NaCl (5 M), RNase-free
Invitrogen Molecular biology grade, 5 M NaCl solution is supplied in one bottle. The solution is certified RNase-free, economical, and ready-to-use.

Shipping Condition | Room Temperature |
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Content And Storage | Store at room temperature. |
Concentration | 5 M |
Product Line | Ambion™ |
Thermo Scientific™ Pierce™ Protein Concentrators PES, 10K MWCO, 0.5–100 mL
Thermo Scientific Pierce Protein Concentrators PES are easy-to-use centrifugal devices that provide fast processing and excellent recovery of proteins with MWCO values of 10K, available in 0.5–100 mL sample volumes.

Shipping Condition | Room Temperature |
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MWCO | 10 kDa |
Content And Storage | Store at room temperature. |
Material (Membrane) | PES |
Purification Target | Protein |
Thermo Scientific™ DTT (dithiothreitol)
Stabilize enzymes and other proteins which possess free sulfhydryl groups with DTT, shown to restore activity lost by oxidation of these groups in vitro.

Product Type | DTT (Dithiothreitol) |
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Concentration | 0.1 M |
Invitrogen™ Dynabeads™ Protein A for Immunoprecipitation
Dynabeads Protein A beads are uniform, 2.8-μm superparamagnetic beads with recombinant Protein A (∼45 kDa) covalently coupled to the surface.

Shipping Condition | Ambient temperature |
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Content And Storage | Dynabeads Protein A are supplied in PBS, pH 7.4 w/0.01% Tween-20, 0.09% NaN3 Store at 2–8°C. |
Purity or Quality Grade | For Research Use Only |
Description | Recombinant Protein A covalently bound to Dynabeads |
Surface Functionality | Protein A |
Material | Polystyrene |
Concentration | 30 mg/mL |
For Use With (Application) | Immunoprecipitation |
High-throughput Compatibility | High-throughput Compatible |
Ligand Type | Protein A |
Type | Superparamagnetic Beads |
Target | Antibodies |
Format | Beads in suspension |
For Use With (Equipment) | KingFisher™ Sample Purification System, DynaMag™ magnets |
Diameter (Metric) | 2.8 μm |
Certifications/Compliance | ISO9001 and ISO13485 |
Uniformity | Monosized 2.8 mm (CV <5%) |
Product Line | Dynabeads™ |
Thermo Scientific™ SuperSignal™ West Femto Maximum Sensitivity Substrate
Ultra-sensitive enhanced chemiluminescent (ECL) HRP substrate for low-femtogram-level detection by Western blot analysis.

Substrate | Horseradish Peroxidase |
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Form | Liquid |
Product Type | Substrate |
Signal Duration | 6 to 8 hr. |
Product Line | SuperSignal™ |
Detection Method | Chemiluminescence |
Thermo Scientific™ SuperSignal™ West Pico PLUS Chemiluminescent Substrate
Thermo Scientific SuperSignal West Pico PLUS Chemiluminescent Substrate is an enhanced chemiluminescent (ECL) horseradish peroxidase (HRP) substrate that enables picogram to high femtogram-level protein detection by western blot analysis.

Shipping Condition | Room Temperature |
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Substrate | Horseradish Peroxidase |
Recommended Antibody Concentrations | 2°: 1:20-100 K (10-50 ng/mL), 1°: 1:1 K (0.2-1 μg/mL) |
Conjugate | HRP |
Form | Liquid |
Product Type | Substrate |
Signal Duration | 6 to 24 hr. |
For Use With (Application) | Western Blot |
Product Line | SuperSignal™ |
Detection Method | Chemiluminescence |
Thermo Scientific™ Pierce™ Bovine Serum Albumin Standard, 2 mg/mL
High-quality, calibrated BSA solutions (2mg/mL) to serially dilute to create protein assay standard curves to accurately measure protein concentration.

Thermo Scientific™ Pierce™ Streptavidin Magnetic Beads
Purify or immunoprecipitate biotinylated proteins or affinity ligands using streptavidin-coated magnetic particles for magnet-based separation.

Particle Size | 1 μm |
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Ligand Type | Streptavidin |
Type | Magnetic Affinity Bead |
Target | Biotin |
Content And Storage | Upon receipt store at 4°C. Product is shipped on an ice pack. |
Protein Form | Recombinant |
Form | Liquid |
Concentration | Slurry: 10 mg/mL, 1% solids |
Product Line | Pierce™ |
Thermo Scientific™ SnakeSkin™ Dialysis Tubing
Perform desalting and buffer exchange for 10 to 100 mL samples with this 3.5K, 7K, and 10K molecular weight cut-off (MWCO), ready-to-use form of traditional dialysis membrane tubing. Securely close dialysis tubing up to 50 mm flat diameter with the sturdy, non-floating tube SnakeSkin Dialysis Clips.

Product Line | SnakeSkin™ |
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Thermo Scientific™ Sulfo-NHS (N-hydroxysulfosuccinimide), No-Weigh™ Format
Prepare amine-reactive sulfo-NHS-ester crosslinkers or enhance carbodiimide (EDC) conjugation for peptides or proteins using N-hydroxysulfosuccinimide, CAS 106627-54-7.

Molecular Weight (g/mol) | 217.13 |
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Solubility | Water |
PEGylated | No |
Invitrogen™ Alexa Fluor™ 647 NHS Ester (Succinimidyl Ester)
Alexa Fluor™ 647 is a bright and photostable far-red dye with excitation ideally suited to the 633 nm laser line.

Emission | 672 nm |
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Excitation | 651 nm |
Invitrogen™ iBlot™ 2 Transfer Stacks, nitrocellulose, mini
Greener Choice Product
This product offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
Learn More About the Greener Choice Program

This product offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
Learn More About the Greener Choice Program
iBlot 2 Transfer Stacks are used to transfer proteins using the iBlot 2 Gel Transfer Device. They are consumable stacks with an integrated nitrocellulose transfer membrane for dry blotting of proteins.

Pore Size | 0.2 μm |
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Content And Storage | Store at room temperature. |
Format | Transfer Stack |
Dimensions (LxW) | 8 x 8 cm |
Green Features | Less waste, responsibly packaged, extended life |
Material | Nitrocellulose |
Product Line | iBlot |
Thermo Scientific™ SuperSignal™ West Dura Extended Duration Substrate
Luminol-based enhanced chemiluminescence (ECL) horseradish peroxidase (HRP) substrate ideal for quantitative western blotting with stable light output for mid-femtogram level detection for western blot analysis.

Substrate | Horseradish Peroxidase |
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Sensitivity | Mid-femtogram |
Form | Liquid |
Product Type | Substrate |
Signal Duration | 24 hr. |
Product Line | SuperSignal™ |
Detection Method | Chemiluminescence |
Content And Storage | -20°C |
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Purity or Quality Grade | ≥ 98% by SDS-PAGE gel and HPLC analyses. |
Conjugate | Unconjugated |
Form | Lyophilized |
Common Name | IL-4 |
Molecular Weight (g/mol) | 15.1 kDa |
Gene Symbol | Il4 |
Endotoxin Concentration | <1 EU/ μg |
Sequence | MHKCDITLQE IIKTLNSLTE QKTLCTELTV TDIFAASKNT TEKETFCRAA TVLRQFYSHH EKDTRCLGAT AQQFHRHKQL IRFLKRLDRN LWGLAGLNSC PVKEANQSTL ENFLERLKTI MREKYSKCSS |
Expression System | E. coli |
For Use With (Application) | ELISA,Functional Assay,Western Blot |
Source | E. coli |
Name | Human IL-4 |
Accession Number | P05112 |
Regulatory Status | RUO |
Gene Alias | B cell growth factor 1; B_cell stimulatory factor 1; B-cell growth factor 1; B-cell IgG differentiation factor; B-cell stimulatory factor 1; BCGF1; BCGF-1; binetrakin; BSF1; BSF-1; cytokine; H-IL-4; IGG1 induction factor; IL2; IL4; Il-4; Il4e12; ILN; Interleukin; interleukin 4; interleukin 4 variant 2; interleukin 4 variant IL-4 delta2; interleukin 4 variant IL-4 delta3; interleukin 4 variant IL-4 int2A; interleukin 4 variant IL-4 int3A; interleukin 4 variant IL-4 int3B; Interleukin4; interleukin-4; interleukin-4 precursor; lymphocyte stimulatory factor 1; MGC79402; M-IL-4; Pitrakinra |
Biological Activity | The ED50 as determined by the dose-dependent stimulation of human TF-1 cells is ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 10^6 units/mg |
Gene ID (Entrez) | 3565 |
Formulation | protein with no preservative |
Recombinant | Recombinant |
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.

MWCO | 7.0 kDa |
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Column Type | Size-exclusion, Proprietary Resin |
Purification Target | Buffer Exchange, Protein |
Product Line | Zeba™ |