RoQuest™ 6000, Polymer Coagulant - Avista™
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RoQuest 6000

RoQuest 6000 is a liquid blend of dual organic coagulants and ferric sulfate used to reduce turbidity and remove humic and fulvic acids in multimedia filters. This product works well on waters containing high soluble organics and turbidites above 2.0 NTU. This multicomponent polymer and iron salt coagulant is formulated specifically for membrane use, including applications of surface waters that are both brackish and seawater in origin. Although this product is membrane compatible, overfeeding of pretreatment chemicals is not recommended as it can affect organic and particulate removal. RoQuest 6000 is also used as a coagulant and flocculant aid in flocculator-clarifiers and multimedia filters. RoQuest 6000 is NSF approved.

Performance Benefits

  • Filter-aid properties resist solids breakthrough in direct filter applications.
  • Low dosage requirements and effective over a wide pH range.
  • Capable of producing RO-quality feedwater in multimedia and sand filters.
  • Compatible with polyamide and cellulose acetate RO membranes and Avista antiscalants, including Vitec 3000, 3025, 5100, 7000.


Product packaging and labels may vary. These images represent packaging and labels for products manufactured and fulfilled by Avista Technologies Inc. in the United States.

Product Data Sheet
Download Product Information Sheet – RoQuest 6000
Safety Data Sheet

If you would like to request a Membrane Cleaner Material Safety Data Sheet, please email Avista Compliance and Regulatory at, call your regional distributor, or click to submit your request.