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SL 265: Dealing with Iron and Other Micro-Irrigation Plugging Problems

Figure 5. A 3/4-inch PVC coupling found in plumbing-supply stores serves well as in-line glass slide holder. Observing the amount, type, and rate of scale deposition occurring on a clean side (inset) can help determine the scaling potential of the irrigation water and the effect of injected scale-inhibiting chemicals.