Laboratory supply

Patel Chemhub Private Limited
Catalogue · Chemicals

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 3 of 4

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Related

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.