Product Category Search
Top rated lab natural proteins
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Best overall
New England Biolabs BSA (Bovine Serum Albumin) Molecular Biology Grade, 100mg/mL, 10mL
Highly pure BSA for molecular biology applications, minimizes interference in enzymatic reactions and stabilizes proteins.
- High purity and consistency
- Excellent for cell culture and assays
- Reputable brand
- Expensive compared to generic brands
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Best for protein quantification
Thermo Scientific Pierce BCA Protein Assay Kit, 500mL
Reliable BCA assay for accurate protein concentration measurement with broad compatibility.
- Accurate and reproducible results
- Compatible with many detergents
- Easy protocol
- Requires incubation time
- Not suitable for low protein concentrations
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Best budget pick
Sigma-Aldrich Bovine Serum Albumin (BSA) Lyophilized Powder, ≥98%
Cost-effective lyophilized BSA powder for general lab use, reconstitutable to desired concentration.
- Low cost per gram
- Versatile for blocking and standards
- Long shelf life
- Requires reconstitution
- Lower purity than molecular biology grade
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Best for protein ladder
Bio-Rad Precision Plus Protein Dual Color Standards, 500 µL
Dual-color pre-stained protein standard for SDS-PAGE, provides clear molecular weight estimation.
- Wide range (10-250 kDa)
- Visible during electrophoresis
- Reference bands at specific sizes
- Limited volume for frequent use
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Best for protein expression
Promega Flexi Vector System for Protein Expression (Trypsin-10)
Comprehensive system for cloning and expression of recombinant proteins in E. coli, includes trypsin-sensitive tag removal.
- Flexible tag options
- High expression yields
- Efficient tag cleavage
- Costly
- Requires specific E. coli strains
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Best for antibody purification
Cytiva (GE Healthcare) Protein A Sepharose 4 Fast Flow, 25 mL
High-flow agarose resin with Protein A for efficient monoclonal antibody purification in column chromatography.
- High binding capacity
- Fast flow rates
- Reproducible results
- Expensive
- Buffer compatibility limitations
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Best for protein extraction
Roche cOmplete Protease Inhibitor Cocktail Tablets (EDTA-free)
Convenient tablets to protect proteins from proteolysis during lysis and purification, broad specificity.
- Broad inhibition spectrum
- Easy to use tablets
- EDTA-free for metalloproteins
- Tablets may not dissolve completely
- Best used fresh
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Best for affinity purification
Thermo Scientific HisPur Ni-NTA Resin, 10 mL
High-capacity nickel resin for purifying His-tagged proteins with low non-specific binding.
- High binding capacity
- Compatible with denaturing conditions
- Easy regeneration
- Nickel leaching over time
- Requires optimization of imidazole concentration
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Best for cell lysis
Sigma-Aldrich Lysozyme from Chicken Egg White, ≥100,000 U/mg
High-activity lysozyme for efficient bacterial cell wall degradation in protein extraction protocols.
- High specific activity
- Effective on Gram-positive bacteria
- Low cost
- Not effective for all bacterial strains
- Requires pH control
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Best for standard curve
BioVision Albumin Bovine Serum (BSA) Standard, 1mg/mL, 10mL
Pre-diluted BSA standard ready for use in protein assays, ensures consistent standard curve.
- Ready to use
- Consistent lot-to-lot
- Convenient for multiple assays
- Limited volume
- Single concentration