What is the purity of BSA Standard Grade?

BSA Standard Grade from SeamlessBio has ≥96% purity (SDS-PAGE). CoA per lot included with full quality testing results. For applications requiring lower endotoxin or fatty acid-free specification, see BSA Low Endotoxin or BSA Fatty Acid-Free.

What is the difference between BSA Standard and BSA Low Endotoxin?

BSA Standard Grade: ≥96% purity, standard endotoxin — for routine cell culture, ELISA blocking and assay buffers. BSA Low Endotoxin: ≥96% purity, ≤1 EU/mg — for endotoxin-sensitive cell culture, cytokine assays and primary cells where standard BSA endotoxin levels would interfere.

Bovine Serum Albumin · Standard Grade · General Cell Culture · On Request

BSA Standard Grade

Bovine Serum Albumin Standard Grade — the most versatile albumin for general cell culture, ELISA blocking, western blot and assay buffer formulation. Cost-effective for high-volume routine applications. CoA per lot, no minimum order.

Request Quote or Sample All Albumin & Proteins

BSA Standard Grade Bovine Serum Albumin Cell Culture ELISA — SeamlessBio Germany

Most Versatile BSA

General cell culture, ELISA blocking, western blot, assay buffer — one grade for all routine applications.

≥96% Purity

SDS-PAGE verified. CoA per lot with full QC results. Consistent lot-to-lot performance.

Cost-Effective

Standard grade — optimal price for high-volume routine applications. No premium specification where not needed.

No MOQ · Free Sample

No minimum order. Free test samples on request. 48-hour quote. Processed in Germany.

Product Specifications

Product	Bovine Serum Albumin (BSA) — Standard Grade
Source	Bovine serum — USA, Australian or South American origin
Purity	≥96% (SDS-PAGE)
Molecular Weight	~66.5 kDa
pH (10% solution)	6.8 – 7.2
Appearance	White to off-white lyophilised powder
Solubility	Freely soluble in water — 200 g/L at 20°C
Available formats	Lyophilised powder · Solution on request
Packaging	10 g · 50 g · 100 g · 500 g · 1 kg · Bulk on request
Storage	+2°C to +8°C (solution) · Room temperature (lyophilised, sealed)
Shelf Life	24 months from date of manufacture
Documentation	CoA per lot · SDS
Minimum order	No minimum order quantity
Availability	On request · Some sizes in shop

Applications

General cell culture media supplement (0.1–4 mg/mL)
ELISA blocking buffer (1–5% BSA in PBS or TBS)
Western blot blocking (3–5% BSA in TBST)
Immunohistochemistry blocking reagent
Assay buffer protein supplement and stabiliser
Protein standard calibration curves
Enzyme stabilisation and storage buffer supplement
Coating buffer for ELISA plates and microarrays

Which BSA Grade Do You Need?

Application	Recommended Grade
General cell culture	Standard ✅
ELISA / western blot blocking	Standard ✅
Primary cells, cytokine assays	Low Endotoxin
DMPK protein binding	Fatty Acid-Free
Lipid binding research	Fatty Acid-Free
Xeno-free required	rHSA Economy

Frequently Asked Questions

What is BSA Standard Grade used for?

General cell culture supplementation, ELISA blocking, western blot blocking, assay buffer formulation and protein stabilisation. The most cost-effective BSA for high-volume routine applications.

What is the difference between Standard and Low Endotoxin BSA?

Standard Grade: standard endotoxin — suitable for routine cell culture, ELISA and western blot. Low Endotoxin: ≤1 EU/mg — required for endotoxin-sensitive applications, primary cells and cytokine assays where standard BSA endotoxin would interfere.

How do I dissolve BSA powder?

Add BSA powder to buffer or water at room temperature. Stir gently — do not vortex or heat. BSA is freely soluble at 200 g/L. Filter through 0.22 µm if sterility is required. Avoid repeated freeze-thaw of solutions.