Methylene blue tablets are used for preparing methylene blue solution for the bacteriological examination of graded milks.
These VWR Methylene Blue Milk-Testing tablets are guaranteed to possess the essential qualities of complete solubility and uniformity

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Acid blue 119 (Alkali blue 6B)

Supplier: TCI

Acid blue 119 (Alkali blue 6B)

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Methyl blue microbiology stain (C.I. 42780)

Supplier: VWR Chemicals

Methyl blue microbiology stain (C.I. 42780)

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Basic Blue 24 (New Methylene Blue)

Supplier: TCI

Basic Blue 24 (New Methylene Blue)

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Methylxylenol blue ≥85.0% (by HPLC)

Supplier: TCI

Methylxylenol blue ≥85.0% (by HPLC)

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Bromothymol blue ACS, Reag. Ph. Eur.

Supplier: Merck

Bromothymol blue ACS, Reag. Ph. Eur.

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Oil Blue N 96% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

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

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Hydroxynaphthol blue indicator for metal titration, Supelco®

Supplier: Merck

Hydroxynaphthol blue indicator for metal titration, Supelco®

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p-Xylenol blue ≥95.0% (by HPLC)

Supplier: TCI

p-Xylenol blue ≥95.0% (by HPLC)

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Aniline blue, water soluble

Supplier: Thermo Fisher Scientific

Aniline blue, water soluble

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

Supplier: Thermo Fisher Scientific

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

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Bromophenol blue, pure indicator

Supplier: Thermo Fisher Scientific

Bromophenol blue, pure indicator

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Bromothymol blue, pure indicator

Supplier: Thermo Fisher Scientific

Bromothymol blue, pure indicator

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Evans blue ≥80.0% (by HPLC)

Supplier: TCI

Evans blue ≥80.0% (by HPLC)

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Thymol blue, pure indicator

Supplier: Thermo Fisher Scientific

Thymol blue, pure indicator

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Methyl blue, powder or crystals, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

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

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Toluidine blue O, powder, Certifiable Grade

Supplier: VWR Chemicals

A blue counterstain often used for metachromatic staining of mast cells, cartilage, and acid mucins. Black to dark green fine powder

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Evans blue ≥75% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

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

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

Supplier: Merck

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

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Reactive blue 4 35% (dye content), Sigma-Aldrich®

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)

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Indophenol blue 60% (dye content), Sigma-Aldrich®

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.

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Calcein blue ≥98.0% (by titrimetric analysis)

Supplier: TCI

Calcein blue ≥98.0% (by titrimetric analysis)

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

Supplier: SIGMA ALDRICH MICROSCOPY

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

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Mordant Blue 9 50% (dye content), Sigma-Aldrich®

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)