Stains and Dyes

A variety of solutions used to selectively bind to and enhance the visibility of biological structures using color and/or fluorescence; used for histology, protein staining, electrophoresis, bacterial classification, blotting, etc.

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3,361 – 3,375 of 7,256 results

3,361

Aqua Solutions Phenolphthalein Solution 0.1% w/v in Methanol (1L)

Phenolphthalein Solution 0.1% w/v in Methanol (1L)

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3,362

Electron Microscopy Sciences Silver Protein, Strong Protargol 5 GR

Protargol, 8.3% Ag CAS #9008-42-8 For reference see Thiery, J.P. (1967). Mise en evidence des Polysaccharides sur coupes fines en microscopie eletronique. J. Microsc. (Paris) 6,987.

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3,363

Electron Microscopy Sciences Basic Fuchsin Stock Solution, 0.1% 500 ML

Used in Taylor's Method for Gram Positive and Gram Negative Bacteria. See AFIP Manual of Histological Staining Methods, 3rd ed., Ed. L. Luna: New York: McGraw Hill Publications, c. 1968, p.226 or Clark, G.: Staining Procedures, Williams and Wilkins Company, Baltimore, 3rd Ed, c.1973, p.320, or Taylor, R.D., Amer. J. Clin. Path. 46:472 (1966)

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3,364

Sigma Aldrich Fine Chemicals Biosciences Phenolphthalein beta-D-glucuronide beta-glucuronidase substrate | 15265-26-6 | MFCD00135881 | 500MG

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3,365

Medchemexpress LLC Bromobimane | 71418-44-5 | MFCD00036951 | 99.3% | 271.11 g/mol | C10H11BrN2O2 | 50 MG

Bromobimane is a thiol-reactive fluorescent dye that is essentially nonfluorescent until it alkylates thiol groups to form strongly fluorescent adducts. It is used to label, detect, and quantify thiols in biochemical and analytical workflows.

Reacts selectively with thiol groups to generate fluorescent products.
Fluorescent properties: excitation 344 nm, emission 450 nm.
High chemical purity suitable for sensitive assays.
Compatible with common fluorescence detection methods.
Supplied for laboratory research applications.

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3,366

Electron Microscopy Sciences Safranin 0, 0.1% 500 ML

Used in Weigert's Iron Hematoxylinwith Methachromic Dyes for nuclear stain. See Weigert, K., Z. Wissen. Mikro., 21:1-5, 1904, Lillie, R.D., Histopathologic Technical and Practical Histochemistry, 3rd edition, McGraw-Hill, NY, 1965, or Clark, G., (ed.), Staining Procedures, 3rd Edition, Williams & Wilkins, Baltimore, p.40, c 1973.

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3,367

Pfaltz & Bauer 4-(P-NITROBENZENEAZO)RES 25G

4-(p-Nitrobenzeneazo)resorcino 25G CAS# 74-39-5

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3,368

Thomas Scientific Starch Indicator 1% (w/v) 1L

Starch Indicator 1% (w/v) 1L

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3,369

Alkali Scientific 50uL PerkinElmer Revvity Janus

Alkali Scientificdesigns its PerkinElmer-compatible automation tips to ensure flawless compatibility with PerkinElmer Janus Varispan liquid handlers Our tips require no separate labware definitions or modifications to PerkinElmer Janus automation control software This conductive black tip in a 96-format is fully interchangeable with the original PerkinElmer P200 automation pipette tip and is also compatible with Sciclone Zephyr Evolution P3 RapidPlate MiniTrak and MultiProbe II HT/ET systems Designed for precise volume transfers up to 200 L the PerkinElmer P200 conductive black tip delivers exceptional accuracy and flexibility Its capacity and length accommodate diverse protocol needs These tips are suitable for use with both 96-format and 384-format plates and are compatible with Janus Varispan pipetting arms Alkali Scientificproduces its PerkinElmer Janus-compatible P200 tips using high-quality virgin polypropylene Advanced polishing techniques minimize liquid retention witho

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3,370

Cayman Chemical MalachIte GreenchlorIde 10g

A triphenylmethane dye; inhibits the proliferation of HEp-2 human larynx cells (IC50 = 2.06 µM); cytotoxic to HEp-2 cells and Caco-2 human colorectal adenocarcinoma cells (IC50s = 2.03 and 13.8 µM, respectively); reduces fungal infection and increases hatching rates of rainbow trout eggs at 2 UG/ml for 60 minutes twice a week; used as a biochemical indicator dye for titrations, pH indicators, and counterstains in histology applications

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3,371

Med Vet International Silicone Nasogastric Feeding Tube, J0386, 3.5Fr, 1.3mm x 20cm, Each

These silicone feeding tubes are great for administering medication and other fluids orally or nasally. All catheters are fully autoclavable. Lateral eyes are on distal tip. Hinged-attached cap.

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3,372

Crescent Chemical Co Inc MALACHITE GREEN OXALATE 250MG

Malachite green oxalate salt Dyes (WS) CAS 2437-29-8 Molecular Weight - 927.0048 Storage - RT Catalog Num - DRE-C14680000 chemical

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3,373

Alkali Scientific Green Dye 20mL 10% Vial 10/Pk

Green Dye, 20mL Sterile Vial (10%), 10/Pk is a visualization solution designed for aseptic process simulations, operator training, and media fill validations in controlled cleanroom environments. The 10% dye concentration provides strong color contrast, allowing operators to clearly observe fluid flow, transfer accuracy, and procedural integrity during validation exercises. Packaged in sterile 20mL vials, the solution is suitable for pharmaceutical, biotechnology, and GMP regulated facilities where reliable process verification is essential. The dye supports realistic simulation of liquid handling workflows without introducing microbial contamination or chemical interference. This makes it a practical tool for validating aseptic technique, performing equipment qualification, and improving operator confidence in sterile fluid handling procedures.