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Catalog Number: (28671.187)
Supplier: VWR Chemicals
Description: o-Tolidine ≥97%, TECHNICAL
UOM: 1 * 100 g

Catalog Number: (28672.294)
Supplier: VWR Chemicals
Description: Determination of oxygen or free chlorine
UOM: 1 * 1 L

Catalog Number: (87971.260)
Supplier: VWR Chemicals
Description: o-Tolidine 0.03% with 0.2% potassium iodide in acetic acid 6% Reag. Ph. Eur. 1123001
UOM: 1 * 500 mL

Supplier: SIGMA-ALDRICH MICROSCOPY
Description: o-Tolidine is a diacidic dye which is sparingly soluble in water and easily soluble in ether and alcohol. On exposure to chlorine or bromine vapors, it forms an intense blue color. This forms the basis for detection of chlorine, nitrates and hydrogen peroxide in air or water. It turns yellow on reacting with free chlorine. o-Tolidine easily forms acid salts.

Supplier: Thermo Scientific
Description: o-Tolidine 95% pract.
Supplier: Thermo Scientific
Description: o-Tolidine ≥98%
Supplier: Thermo Scientific
Description: Trypan blue
Supplier: SIGMA-ALDRICH MICROSCOPY
Description: Trypan blue is a tetrasulfonated anionic, hydrophilic azo dye derived from toluidine. The non-permeable cell membrane dye is a vital dye that selectively stains dead or non-viable cells, that pass through damaged but not through intact cell membranes.
Supplier: SIGMA-ALDRICH MICROSCOPY
Description: Trypan Blue (C.l. 23850) is a large, tetrasulfonated anionic, hydrophilic dye. It is also known as diamine blue 3B. Trypan blue has been used as a dye in trypan blue exclusion assay/cell viability assay to detect dead cells.

Supplier: Thermo Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride ACS
Supplier: Thermo Scientific
Description: Trypan blue 60% (dye content)
Catalog Number: (K940-100ML)
Supplier: VWR Chemicals
Description: 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.
UOM: 1 * 100 mL

Supplier: Thermo Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride ≥97%
Catalog Number: (EHERC12726000)
Supplier: EHRENSTORFER GMBH
Description: o-Tolidine
UOM: 1 * 0,1 g


Supplier: Thermo Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride 99%
Catalog Number: (AATB2452)
Supplier: AAT BIOQUEST INC
Description: Trypan blue, a diazo dye is a vital stain that colors dead tissues or cells blue.
UOM: 1 * 10 g

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at +43 1 97002 - 0.
Dual use goods can only be delivered within the European Union.
Dual use goods can only be delivered within the European Union.
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The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at +43 1 97002 - 0.
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