pH Measurement Reagents

pH Measurement Reagents — compiles color indicators such as Bromothymol Blue, Cresol Red, Bromocresol Green, Methyl Red, and Phenol Red in ready-to-use solution form that change color within specific pH ranges. This group functions as indicator reagents for visual pH determination.

These indicator reagents are used in analytical chemistry and educational laboratories to qualitatively determine the pH range of a solution based on color change, and in acid-base titration to mark the titration endpoint. Each indicator has a different color change range, so the selection is matched to the pH range of the solution to be measured.

Product examples in this collection: TCI B0658 76-59-5 Bromothymol Blue (0.04% in Water) [for pH Determination], TCI C0407 62625-29-0 Cresol Red (0.04% in Water) [for pH Determination], TCI B0579 76-60-8 Bromocresol Green (0.04% in Water) [for pH Determination], TCI M0056 493-52-7 Methyl Red (0.04% in Water) [for pH Determination], TCI B0117 Bromophenol Blue (0.04% in Water) [for pH Determination], TCI N0161 100-02-7 4-Nitrophenol (0.25% in Water) [for pH Determination], TCI B0115 115-40-2 Bromocresol Purple (0.04% in Water) [for pH Determination], TCI P0101 143-74-8 Phenol Red (0.04% in Water) [for pH Determination].

Select an indicator based on the color transition pH range that suits your measurement needs, and pay attention to the concentration of the ready-to-use solution available. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other parallel categories under Analytical & Chromatography Reagents, often used together in a single laboratory workflow:

Back to Analytical & Chromatography Reagents. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — official TCI Japan distributor in Indonesia — to check availability and lead time directly from Japan.

Related TCI catalogs (PDF)

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