Buffers for Life Sciences

  • 通用化学溶液
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三(羟基甲基)氨基甲烷 盐酸盐, 1M 溶液, pH 8.0

Tris, Hydrochloride is commonly used as a buffer component for phenol extractions of DNA or RNA and a buffering component of separating and stacking gels in the characterization of protein products by SDS-PAGE.

溴化乙啶溶液, 10mg/ml

Ethidium bromide has been used in a number of fluorimetric assays for nucleic acids.1,2,3 It has been shown to bind to single-stranded DNA (although not as strongly) and triple-stranded DNA.4 Because of its ability to bind to DNA, EtBr is an inhibitor of DNA polymerase.

Ponceau S, 0.1% v/v soln. in 5% acetic acid

Ponceau S is used to prepare a stain for rapid reversible detection of protein bands on nitrocellulose or polyvinylidene fluoride membranes, as well as on cellulose acetate membranes. And it is also used as a rapid protein band stain.

Denhardt's solution (50X)

Denhardt's solution is used to reduce non-specific binding of detection reagents to the Northern and Southern Blot membranes. Denhardt's Solution is a mixture of blocking agents used in membrane-based hybridization protocols.

Potassium acetate, 8M aq. soln.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

Denhardt's solution (100X)

Denhardt's Solution is used as a blocking reagent for northern or southern blots to prevent probe binding on open membrane space and non-target nucleic acids. Denhardt's reagent is recommended for Northern hybridization, hybridization of RNA, single copy Southern hybridization' or hybridization of...

Sodium acetate, 3M aq. soln., pH 4.5, autoclaved

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

Neutralization solution, Thermo Scientific Chemicals

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

Polyethyleneimine, M.W. 60,000, 50% w/w aq. soln.

Polyethyleneimine is used for protein and nucleic acid precipitation, transfection assays, and to pretreat filters to increase the binding of proteins. Polyethyleneimine can also complex heavy metal ions. An effective permeabilizer of gram negative bacteria.