Indicators & Stains
pH, redox, complexometric and adsorption indicators, and biological stains with certified dye content.
10 categories · 4115 published records. The catalogue we can supply is broader than the catalogue we publish — send us the item if you cannot find it.
Before you order
Biological stains are specified on dye content, not purity — the percentage of the powder that is actually the colourant. Two lots at different dye contents give visibly different results from the same recipe, which is why the figure appears on every stain listed here.
186 records · page 4 of 4
Cannot find it? Ask on WhatsApp →Toluidine Blue O 1% Solution
Offered in Extra Pure grade. Listed in 2 pack sizes from 100 ml to 500 ml.
IndentEXTRA PURE100 ml · 500 ml
Specification for Toluidine Blue O 1% Solution
Specification for Toluidine Blue O 1% Solution Pack sizes 100 ml · 500 ml HSN code 32129090 Grades offered
EXTRA PUREFull record, hazard data and enquiry for Toluidine Blue O 1% Solution →
Trypan Blue 0.4% Solution
Offered in Extra Pure grade. Listed in a 125 ml pack.
IndentEXTRA PURE125 ml
Specification for Trypan Blue 0.4% Solution
Specification for Trypan Blue 0.4% Solution Pack sizes 125 ml HSN code 32129090 Grades offered
EXTRA PUREFull record, hazard data and enquiry for Trypan Blue 0.4% Solution →
Xylene Cyanol Solution
Offered in Indicator grade. Listed in a 100 ml pack.
IndentINDICATOR100 ml
Specification for Xylene Cyanol Solution
Specification for Xylene Cyanol Solution Pack sizes 100 ml HSN code 32129090 Grades offered
INDICATORFull record, hazard data and enquiry for Xylene Cyanol Solution →
p-Xylenol Blue
CAS 125-31-5C23H22O5S, M.W. 410.49. Offered in Indicator and AR grades. Listed in 2 pack sizes from 1 g to 5 g.
C23H22O5S · 410.49
IndentINDICATORAR1 g · 5 g
Specification for p-Xylenol Blue
Specification for p-Xylenol Blue Pack sizes 1 g · 5 g HSN code 32049000 Grades offered
INDICATORARAlso known as
- p-Xylenolsulfonphthalein
Xylenol Orange
CAS 3618-43-7C31H28N2O13SNa4, M.W. 760.59. Offered in AR grade. Listed in 2 pack sizes from 5 g to 10 g.
C31H28N2O13SNa4 · 760.59
IndentAR5 g · 10 g
Specification for Xylenol Orange
Specification for Xylenol Orange Pack sizes 5 g · 10 g HSN code 29349990 Grades offered
ARAlso known as
- acid sodium salt)
- zinc titrations
Xylenol Orange Solution for
Offered in Indicator grade. Listed in a 100 ml pack.
IndentINDICATOR100 ml
Specification for Xylenol Orange Solution for
Specification for Xylenol Orange Solution for Pack sizes 100 ml HSN code 29349990 Grades offered
INDICATORFull record, hazard data and enquiry for Xylenol Orange Solution for →
What laboratories usually order alongside this.
Volumetric Solutions
Ready-to-use standardised titrants and concentrate ampoules, supplied with the batch factor and Certificate of Analysis.
Buffers & Culture Media
pH buffer solutions, capsules and tablets, biological buffer substances, and microbiological media components.
Organic Reagents
Organic acids, alcohols, aldehydes, amines, carbohydrates and synthesis reagents for preparative and analytical chemistry.
Three things worth checking before you raise the purchase order.
Grade is not a luxury decision. An Extra Pure solvent in an HPLC mobile phase produces a rising gradient baseline and ghost peaks that cost more in re-runs than the grade upgrade would have cost. Equally, buying analytical grade for a teaching practical wastes real money across an academic year. Match the grade to what the result has to survive.
Hydration state changes what you weigh. Magnesium sulphate heptahydrate has a molecular weight of 246.48; the anhydrous salt is 120.37. They carry different CAS numbers and are different products. Catalogues frequently print only “magnesium sulphate”. Every listing here states the hydrate.
Concentrated acids are quoted as cartons, not bottles. 2 × 500 ml and 4 × 2.5 L are the standard configurations in this trade. Comparing a per-bottle price against a per-carton price is the single most common quotation error we see, and it is usually the buyer who absorbs it.
Bulk quantities — 25 kg, 50 kg, 200 L drums — are priced on request because freight and packing dominate the cost. Send us your annual consumption and we will quote a schedule rather than a line item.
