污泥取样工具长期使用后会出现内部残留物使壁管朦胧清晰度降低。清洁刷配以温和的清洁剂，适当温度的水，可是有效的清除这些污渍，从而使采集的样品可以清晰准确的读数。组成由镀锌钢丝和聚酯刷毛。刷子可能没办法*清楚一些油酯，那么我们可以使用清洁棒和棉质清洁带来清除这些油渍。

After prolonged use, residue and filmy deposits may build up inside the Sludge Judge®. The cleaning brush used with a mild detergent and warm water will help break up these materials and keep the unit clear so accurate sludge readings can be taken. It is made of galvanized steel wire and polyester bristles. The brush may not be able to clean oil and grease – see the cleaning rod for this application. Disassemble the unit and clean each section separay. Use for Sludge Judge® and Sludge Judge® Ultra. 6 ft. 1" （1.83 m 2.54 cm） diameter bristle.