TEST WITH THE BEST – ITS

DPD-1 reagent strips vs. HACH powder pillows

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Chlorine analysis has wide commercial applicability, and is useful for testing drinking water, pool and spa water, aquarium water, industrial and environmental water, and for other types of water testing. The eXact® Micro 7+ Advanced Photometric System (US Patent #7333194), which uses DPD for touch-free chlorine analysis in a test strip form, was granted U.S. [...]

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DPD comes in various forms, the most common of which include powder pillows, liquids, tablets, and ReagentStripsTM. Each form of works equally well when used correctly and most users can switch between them without seeing too noticeable a change in their oxidizer test results. Each form of DPD has its advantages and disadvantages, see below: Tablets: One of the cheapest forms [...]

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One of the most widely used testing methods for free and total chlorine makes use of something known as ‘DPD’ which stands for N,N Diethyl-1,4 Phenylenediamine Sulfate. The addition of DPD to water samples containing oxidizers such as free chlorine, bromine, iodine, chlorine dioxide and/or permanganate results in the formation of a reddish tint to [...]

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