Indicator paper, bottle with 200 strips, potassium iodid starched paper

Potassium iodide starch paper is supplied as indicator paper strips in a bottle containing 200 strips for rapid qualitative detection work in the laboratory. The paper is characterised by a white-to-violet colour response, making the transition easy to observe during routine checks. Potassium iodide starch papers are classically used to indicate oxidising species that liberate iodine, which then forms the familiar coloured complex with starch on the strip. This bottle format keeps a generous working stock of dry strips ready at the bench for serial tests, student practicals, and in-process screening. From manufacturer filtraTECH, the strips offer a straightforward visual method that requires no instrumentation beyond the colour change itself. Typical laboratory material use includes spotting oxidants in aqueous samples, verifying residual oxidising agents after reactions or disinfection steps, and teaching demonstration of iodine–starch chemistry. Each strip is intended for single use: moisten or contact the sample as appropriate for the method, observe the white-violet shift, and discard. With two hundred strips per bottle, the pack supports frequent qualitative checks while remaining compact for storage and shared lab stations that need a reliable potassium iodide starch indicator paper on hand.

This article is part of Test strips & indicator papers, in Test kits & water analysis.

Key features

• Pack size: bottle with 200 strips
• Product type: Potassium iodide starch paper
• Indicator system: Potassium iodide–starch
• Colour change: white–violet
• Format: Ready-to-use test strips
• Detection: Qualitative oxidant indication