Indicators and stains
- Chemicals
- 194
- Suppliers
- 750
About indicators and stains
Indicators and stains make chemical and biological changes visible. pH indicators include phenolphthalein, methyl orange, methyl red, bromothymol blue, bromocresol green, thymol blue and universal indicator mixtures. Redox indicators include ferroin and diphenylamine sulfonate, and metallochromic indicators for complexometric titrations include eriochrome black T, murexide, calcon and xylenol orange. Biological stains include hematoxylin, eosin, Giemsa, Wright and Gram stain components, crystal violet, safranin, methylene blue and periodic acid-Schiff reagents.
Read more about indicators and stainsShow less
Chemistry labs use indicators for titrations and test strips, while pathology, microbiology and histology labs use stains for diagnosis and research. Clinical diagnostic stains in some markets are regulated as in vitro diagnostic products, which adds requirements for the supplier.
Ask for dye content, transition range and colour change for indicators, solubility, and for stains the certification by a recognised stain commission or a performance test result. Ready-to-use solutions and kits save time but have shorter shelf lives. Some dyes are toxic or classified as carcinogens, so check handling and disposal guidance.
Top indicators and stains
Showing 1 to 48 of 194 chemicals, most searched and traded first.
Methylene blueCAS 61-73-4C16H18ClN3S190 suppliers
Crystal violetCAS 548-62-9C25H30ClN3117 suppliers
Malachite greenCAS 569-64-2C23H25ClN2131 suppliers
Cobalt chloride (cocl2)CAS 7646-79-9Cl2Co49 suppliers
EosinCAS 17372-87-1C20H6Br4Na2O583 suppliers
AlizarinCAS 72-48-0C14H8O4109 suppliers
Rhodamine BCAS 81-88-9C28H31ClN2O3168 suppliers
CalceinCAS 1461-15-0C30H26N2O1376 suppliers
2-BromophenolCAS 95-56-7C6H5BrO86 suppliers
3,3',5,5'-TetramethylbenzidineCAS 54827-17-7C16H20N296 suppliers
Thioflavin TCAS 2390-54-7C17H19ClN2S74 suppliers
Phenol redCAS 143-74-8C19H14O5S97 suppliers
3,3'-DiaminobenzidineCAS 91-95-2C12H14N479 suppliers
Neutral redCAS 553-24-2C15H17ClN469 suppliers
4-Nitrophenyl phosphateCAS 330-13-2C6H6NO6P27 suppliers
9-AminoacridineCAS 90-45-9C13H10N259 suppliers
CrocinCAS 42553-65-1C44H64O2429 suppliers
2',7'-DichlorofluoresceinCAS 76-54-0C20H10Cl2O542 suppliers
C.I. Basic Orange 14CAS 65-61-2C17H20ClN331 suppliers
Aurintricarboxylic acidCAS 4431-00-9C22H14O924 suppliers
Osmium tetroxideCAS 20816-12-0O4Os18 suppliers
2,3-Butanedione monoximeCAS 57-71-6C4H7NO222 suppliers
Acid Red 52CAS 3520-42-1C27H29N2NaO7S286 suppliers
C.I. Direct Blue 14CAS 72-57-1C34H24N6Na4O14S425 suppliers
X-GalCAS 7240-90-6C14H15BrClNO625 suppliers
C.I. Basic Red 2CAS 477-73-6C20H19ClN441 suppliers
Carminic acidCAS 1260-17-9C22H20O1311 suppliers![1-[2-[4-[2-(2,5-Dimethylphenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]-2-naphthalenol chemical structure, C26H24N4O, CAS 14288-70-1](/s/NPGIHFRTRXVWOY-UHFFFAOYSA-N.svg)
1-[2-[4-[2-(2,5-Dimethylphenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]-2-naphthalenolCAS 14288-70-1C26H24N4O20 suppliers
Solvent Yellow 34CAS 492-80-8C17H21N316 suppliers
Thioflavin SCAS 1326-12-1C25H24ClN3O3S31 supplier
Basic violet 14CAS 632-99-5C20H20ClN339 suppliers
Acridine orange baseCAS 494-38-2C17H19N317 suppliers
Sodium alizarinesulfonateCAS 130-22-3C14H7NaO7S28 suppliers
Indigo carmineCAS 860-22-0C16H8N2Na2O8S282 suppliers
C.I. Basic Yellow 2CAS 2465-27-2C17H22ClN361 suppliers
C.I. Direct Blue 53CAS 314-13-6C34H24N6Na4O14S415 suppliers
Tolonium chlorideCAS 92-31-9C15H16ClN3S23 suppliers
Methyl greenCAS 54327-10-5C26H33Cl2N37 suppliers
Bromocresol greenCAS 76-60-8C21H14Br4O5S55 suppliers
1-(p-Phenylazophenylazo)-2-naphthol (Sudan III)CAS 85-86-9C22H16N4O54 suppliers
PyronineCAS 92-32-0C17H19ClN2O14 suppliers
Brilliant greenCAS 633-03-4C27H34N2O4S37 suppliers
Sudan Black BCAS 4197-25-5C29H24N615 suppliers
Bromothymol blueCAS 76-59-5C27H28Br2O5S51 suppliers
C.I. Acid Orange 10CAS 1936-15-8C16H10N2Na2O7S261 suppliers
Rose bengalCAS 11121-48-5C20H2Cl4I4K2O519 suppliers
Indigotindisulfonic acidCAS 483-20-5C16H10N2O8S23 suppliers
Magenta baseCAS 3248-93-9C20H19N35 suppliers
Top suppliers of indicators and stains
Manufacturers and traders with live products in this category. Paid members appear first.
Indicators and stains suppliers by country
Countries with at least 5 suppliers in this category. Open one to see its manufacturers and traders.
New indicators and stains from suppliers
Products recently listed by manufacturers and traders in this category.
Latest buy requests for indicators and stains
Open requests from buyers. Suppliers can quote after signing in.
- 0 quotesPhenol red1 kg To India 7 d ago
- 0 quotesMethylene blue800 bags To India 7 d ago
- 0 quotesTris(hydroxymethyl)aminomethane100 kg+ 1 more products To ThailandMonthly need 7 d ago
- 1 quoteCrystal violet20 drums To India 7 d ago
- 1 quote1-Chloro-2,4-dinitrobenzene80 bags+ 3 more products To South AfricaQuarterly need 7 d ago
- 0 quotesCalcein250 kg To GermanyMonthly need 7 d ago
Buyer names and contact details stay private until the buyer accepts a quote.
Guides for buyers
Practical reading on grades, documents, regulation and shipping before you buy.
- Article · QualityWhat a certificate of analysis should contain
The parts of a complete COA, how to read it against your specification, the warning signs of a weak or copied certificate and how to verify results.
- Article · SourcingHow to write an RFQ that gets fast and accurate quotes
What suppliers need to quote quickly and comparably: exact product identity, quantity and packing, delivery terms, documents, samples and payment, with a ready to use template.
- Guide · Trade and logisticsIncoterms 2020 for chemical buyers
The eleven Incoterms 2020 rules from a chemical buyer's point of view, with the traps around CIF insurance, FOB for containers, EXW exports, DDP imports and dangerous goods.
Frequently asked questions
Quick answers about buying indicators and stains on CompoundList.
What are indicators and stains?
pH and redox indicators, metallochromic indicators and biological stains such as phenolphthalein, methyl orange and eosin.
How many indicators and stains are listed on CompoundList?
CompoundList lists 194 chemicals in indicators and stains. 750 suppliers offer products in this category.
Which indicators and stains are the most popular?
The most searched and traded indicators and stains on CompoundList include Methylene blue, Crystal violet, Malachite green, Cobalt chloride (cocl2) and Eosin. They are part of the wider laboratory reagents and standards family.
How do I buy indicators and stains in bulk?
Open a chemical to compare its suppliers, or post one buy request with the product, grade, quantity and destination. Matching suppliers send you quotes, and your contact details stay private until you accept one.