Supplier: VWR Chemicals

Hydroxynaphthol blue, AnalaR NORMAPUR® indicator for metal titration

Supplier: SIGMA ALDRICH MICROSCOPY

Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg₂(NO₃)₂. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes colour from pale green to blue. Binding of TBPB to proteins is dependent on pH.

Supplier: VWR Chemicals

Bromothymol blue 1% in DMF Reag. Ph. Eur. 1012902

Supplier: Thermo Fisher Scientific

Aniline blue, water soluble

Supplier: Thermo Fisher Scientific

Methylene blue 1% (w/v) in aqueous solution

Supplier: Thermo Fisher Scientific

Bromophenol blue, pure indicator

Supplier: Thermo Fisher Scientific

Bromothymol blue, pure indicator

Supplier: Thermo Fisher Scientific

Thymol blue, pure indicator

Supplier: Merck

Bromothymol blue ACS, Reag. Ph. Eur.

Supplier: SIGMA ALDRICH MICROSCOPY

Oil Blue N, Dye content 96% (Solvent Blue 14).

Supplier: SIGMA ALDRICH MICROSCOPY

Nile Blue A, Dye content ≥75 % (Basic Blue 12; Nile blue sulfate)

Supplier: VWR Chemicals

Bromothymol blue solution R3 Reag. Ph. Eur.

Supplier: Merck

Hydroxynaphthol blue indicator for metal titration, Supelco®

Supplier: SIGMA ALDRICH MICROSCOPY

Methyl Blue is a triaminotriphenylmethane dye, widely used in paper, textile and leather production.

Supplier: VWR Chemicals

Comprises <0.1% bromophenol blue and <0.1% sodium hydroxide in water.

Supplier: Thermo Fisher Scientific

Bromophenol blue 0.1% in water, pure

Supplier: SIGMA ALDRICH MICROSCOPY

Indophenol Blue is used to colourimetrically measure N-containing compounds. The free amino acids react to form a blue color complex.

Supplier: SIGMA ALDRICH MICROSCOPY

Methylene blue, Neisser formulation. Well developed granules of volutin (polyphosphate) may be seen in unstained wet preparations as round refractive bodies within the bacterial cytoplasm. With methylene blue they stain metachromatically, a reddish purple color.

Supplier: Thermo Fisher Scientific

Trypan blue 60% (dye content)

Supplier: SIGMA ALDRICH MICROSCOPY

Bromochlorophenol blue 95% (dye content), Sigma-Aldrich®

Supplier: Merck

Bromophenol blue ACS, Reag. Ph. Eur., Supelco®

Supplier: SIGMA ALDRICH MICROSCOPY

Evans blue has been used to check cell viability. It has been used to study BBB permeability.

Supplier: SIGMA ALDRICH MICROSCOPY

Reactive Blue 4, Dye content 35 % (1-Amino-4-[3-(4,6-dichlorotriazin-2-ylamino)-4-sulfophenylamino]anthraquinone-2-sulfonic acid; Procion(R) blue MX-R)

Supplier: SIGMA ALDRICH MICROSCOPY

Basic blue 3 (BB3) can be removed from aqueous solutions with the help of activated carbon prepared from rubber seed coat.[1] Basic blue 3 (C.I. 51104) is a cationic dye. It is generally positively charged in an aqueous solution. Basic blue 3 has a brilliant blue shade and thus has been used as a colourant in dyeing acrylic fabrics.

Supplier: SIGMA ALDRICH MICROSCOPY

Victoria Blue R is a basic dye. It belongs to the class of diphenylnaphthylmethane dyes. Victoria Blue R has been employed in manufacture of lake pigments. It has lot of industrial applications, but it is rarely used as a biological stain.

Supplier: SIGMA ALDRICH MICROSCOPY

Mordant Blue 9, Dye content 50 % (6-(5-Chloro-2-hydroxy-3-sulfophenylazo)-5-hydroxy-1-naphthalenesulfonic acid disodium salt; 6-(5-Chloro-2-hydroxy-4-sulfonphenylazo)-5-hydroxy-1-naphthalene-sulfonic acid sodium salt)

Supplier: Merck

Löffler's methylene blue solution is generally used as bacteriological counter staining of, e.g. of gonococcae, lactic acid bacteria and for visualization of the pole corpuscles of pasteurella.

Supplier: SIGMA ALDRICH MICROSCOPY

Ehrlich’s reagent III, Loeffler’s Methylene Blue. Methylene Blue was earlier recognized as a good nuclear stain, the staining solutions are always either aged or alkalized, if not both. More importantly it is an excellent stain for ribonucleic acid, which is the important stainable constituent of bacterial bodies, of lymphocyte and hemoportoal cytoplasm, and of nerve cell tigroid granules. It can also be employed in capsule stain. The capsule stain begins as a negative stain leaving the organisms colorless. The capsule are clearly seen as halo surrounding the bacterial cell. Another staining procedure is performed with nigrosin (Cat. No. 43925).

Supplier: SIGMA ALDRICH MICROSCOPY

Bromophenol Blue is a tracking dye for nucleic acid or protein electrophoresis in agarose or polyacrylamide gels.

Supplier: VWR Chemicals

A pre-mixed dye solution used in cell culture applications to determine cell viability. A researcher can remove a sample of cells from culture and combine in a 1:1 ratio with the Trypan Blue solution. Under the microscope, dead cells will appear a blue color and viable cells will appear clear and translucent. Using a hemacytometer (gridded microscope slide), a researcher can quantify the percentage of dead cells within a population. Stained cells are ready for counting within five minutes.