1072 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Pyrocatechol Violet (PV) is a sulfone phthalein dye. It chelates metal ions. The metal-PV complex is bluish-violet in colour.

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

In Schaeffer-Fulton`s method, a primary stain-malachite green is forced into the spore by steaming the bacterial emulsion. Malachite green (Schaeffer & Fulton`s Spore Stain A: Cat. No. 90903) is water soluble and has a low affinity for cellular material, so vegetative cells may be decolorized with water. Vegetative cells are then counterstained with safarin. The components and the method are also available as kit (Cat. No. 04551).
Schaeffer & Fulton`s Spore Stain B: SafarinO 5 g/l in water

Supplier: SIGMA ALDRICH MICROSCOPY

Counting leukocytes in the counting chamber.

Supplier: SIGMA ALDRICH MICROSCOPY

4-Chloro-7-sulphobenzofurazan ammonium salt, powder

Supplier: SIGMA ALDRICH MICROSCOPY

Siliconizing reagent for glass and other surfaces. Sigmacote® is a solution of a chlorinated organopolysiloxane in heptane that readily forms a covalent, microscopically thin film on glass.

Supplier: SIGMA ALDRICH MICROSCOPY

4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate,97% (Benzaldehyde 2,4-disulfonic acid disodium salt; Sodium 4-formylbenzene-1,3-disulfonate).

Supplier: SIGMA ALDRICH MICROSCOPY

This acid alcohol is part of Flourecent Stain Kit for Mycobacteria (Cat. No. 05151). It is used for decolorising.

Supplier: SIGMA ALDRICH MICROSCOPY

Inhibits soluble guanylate cyclase.

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

Diethyl 3,4-pyridinedicarboxylate,97% (Cinchomeronic ester)

Supplier: SIGMA ALDRICH MICROSCOPY

4-tert-Butylphthalic anhydride has been used to synthesise novel yellow quinophthalone dyes for LCD colour filters.

Supplier: SIGMA ALDRICH MICROSCOPY

Estriol 3-sulfate sodium salt, (1,3,5(10)-Estratriene-3,16alpha,17beta-triol 3-sulfate; 3,16alpha,17beta-Trihydroxy-1,3,5(10)-estratriene 3-sulfate)

Supplier: SIGMA ALDRICH MICROSCOPY

N,N-Dimethyl-p-phenylenediamine dihydrochloride (DMPD) has been used in the HID-AB (high iron diamine-alcian blue) staining of intestinal tract samples. N,N-Dimethyl-p-phenylenediamine dihydrochloride (DMPD) is used for the determination of peroxidase. DMPD is converted into a red pigment of semiquinone nature. It is also used in the HID-AB (high iron diamine-alcian blue) staining procedures, which are used to differentiate between sialomucin and sulfomucin in the gastrointestinal tract.

Supplier: SIGMA ALDRICH MICROSCOPY

Benzophenone imine plays a vital role as an ammonia surrogate. It is primarily used as ammonia equivalents for the selective formation of protected primary amines. Benzophenone imine is useful as a synthetic intermediate, especially for the synthesis of glycine Schiff base. Benzophenone imine is useful for the preparation of nitrile yield dimers.

Supplier: SIGMA ALDRICH MICROSCOPY

Standard procedure and microwave procedure included in package insert.
When treated with periodic acid, glycols are oxidized to aldehydes. After reaction with Schiff′s Reagent (a mixture of pararosaniline and sodium metabisulfite), a pararosaniline adduct

Supplier: SIGMA ALDRICH MICROSCOPY

Metanil yellow has been used for staining of leukocyte granules. It is also used as a counterstain in microscopic sections.

Supplier: SIGMA ALDRICH MICROSCOPY

Azure B has been used in M′Fadyean stain to visualize Bacillus anthracis capsule. Azure B is a cationic dye. It is part of the Romanowsky stain, which is used for staining of blood films. It is also used for the localisation of nucleic acids and lignin.

Supplier: SIGMA ALDRICH MICROSCOPY

Bromocresol green is a sulfonephthalein dye. It is mainly used for measuring serum albumin. In acidic conditions, bromocresol green interacts with albumin, thereby resulting in an increase in absorbance at 630 nm. The change in absorbance is linked with the concentration of albumin. Bromocresol Green is also a pH indicator, changing from yellow (pH 3.8) to blue color (5.4). It is widely used as a colloidal pigment.

Supplier: SIGMA ALDRICH MICROSCOPY

This kit is intended for demonstration of nonspecific esterase in a subset of lymphocytes for determining maturation arrest. Kits 90A1 or 91A are intended for monocyte identification.

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescent diazoalkane useful as an HPLC derivatization reagent for carboxylic acid detection with better detection limit parameters and greater chemical stability than the commonly used 9-anthryldiazomethane.

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorinert™ belongs to the group of aliphatic compounds. It is considered as a pressure-transmitting medium because it is highly inert. Fluorinert™ Electronic Liquid FC-770 is a thermally stable, fully-fluorinated liquid that has ideal properties for use as a heat transfer fluid in a variety of industries. The inertness of Fluorinert™ FC-770 permits its use as a direct contact single and two-phase coolant in certain supercomputers and sensitive military electronics. Its high dielectric strength and electrical resistivity are ideal for applications in high voltage transformers and power electronics. In the semiconductor manufacturing industry, its wide liquid range makes Fluorinert™ liquid FC-770 suited for cooling ion implanters, dry etchers and CVD machines. Its low pour point also permits its use in thermal shock and test equipment.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan red G in toluene, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Aurintricarboxylic acid ammonium salt has been used as a nuclease inhibitor to study its effects on transfection.

Supplier: SIGMA ALDRICH MICROSCOPY

Tetramethylrhodamine isothiocyanate Isomer R (TRITC) is the R isomer of tetramethylrhodamine isothiocyanate and is also known as 6-tetramethylrhodamine isothiocyanate. It is a strongly fluorescent compound soluble in ethanol, methanol, dimethylformamide, dimethylsulfoxide, and water. TRITC is a moderately-sized aminoxanthene dye carrying carboxylic acid and isothiocyanate substituents on the non-planar pendant phenyl ring. It forms a lipophilic cation in acidic pH and a hydrophilic zwitterion around neutral pH. The isothiocyanate group reacts with nucleophilic substituents (e.g., amino, hydroxyl, thiol) of biomolecules, providing the means of attaching a fluorescent label. TRITC also reacts with water and hydroxide ions and is unstable in aqueous solutions. TRITC is commercially available as a zwitterion or as a chloride.

Supplier: SIGMA ALDRICH MICROSCOPY

Staining system for polymorphonucleocytes in blood or bone marrow films.

Supplier: SIGMA ALDRICH MICROSCOPY

It contains p-Phenylenediamine diHCL (1 part) and catechol (2 parts). Commonly referred to as Hanker Yates reagent. Kit component in the Sigma Leukocyte peroxidase (myeloperoxidase) Procedure, 390A.

Supplier: SIGMA ALDRICH MICROSCOPY

Fast Garnet GBC base has been used as a stain in papain activity inhibition assay, to stain for tryptase-activity and chymase-like activity, to gel stain for esterolytic activity.

Supplier: SIGMA ALDRICH MICROSCOPY

Pinacyanol chloride, (1,1'-Diethyl-2,2'-carbocyanine chloride; 2,2'-Trimethinequinocyanine chloride; Quinaldine blue).

Supplier: SIGMA ALDRICH MICROSCOPY

Calcein AM 4 mM in DMSO ≥90% (by HPCE), clear solution