Water treatment training and consulting
Industrial water treatment training and consulting

Element Cleaning Evaluations


For cleaning evaluationscall us at1-877-711-4347orUse ourContact Form


A DHP RO Membrane Element Chemical Cleaning Evaluation provides a client with the best cleaner(s) and the best procedure to use to chemically clean a fouled and/or scaled reverse osmosis (RO) or nanofiltration (NF) unit.  DHP does not sell equipment or chemicals, so the results of the cleaning evaluation are unbiased.


DHP has performed cleaning evaluations for high-tech water treatment systems since the 1990s.  DHP has performed dozens of cleaning evaluations.



Others’ Cleaning Evaluations

Most reverse osmosis (RO) and nanofiltration (NF) membrane element cleaning evaluations are performed by membrane water treatment chemical vendors.  This is because if you’re a good client, you may get the evaluation for free.  Only the chemicals sold by that vendor, however, are tested so the results are biased.


Vendors may also evaluate cleaners on membrane that does NOT include the feed spacer.  This makes cleaning much simpler, but is not realistic.


DHP Cleaning Evaluations Are Unique in the Industry

Before Cleaning


A DHP cleaning evaluation includes:

After 1st Procedure



After 2nd Procedure


After 3rd Procedure



For cleaning evaluationscall us at1-877-711-4347orUse ourContact Form


Call us toll free at 1-877-711-4347

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Nanofiltration and Ultrafiltration water treatment training

Water Treatment Training, Reverse Osmosis

David H. Paul, Inc.  provides water treatment training and consulting to industrial water treatment facilities.  Our specialty is Reverse Osmosis and Membrane Technology.  We also teach pretreatment and High Purity Water Treatment such as Electrodeionization (EDI), Ion Exchange, Ultraviolet Irradiation and Multimedia Mixed Beds.  It is important for industries you use the water treatment training information to save costly damage to water treatment training equipment.  Reverse osmosis systems can cost in time and money,  Membrane water treatment is a ever advancing technology and David H. Paul, Inc. provides the water treatment training and consulting to help companies design and operate reverse osmosis, nanofiltration, ultrafiltration and microfiltration systems to best of their capacity.



Water Treatment Training, Reverse Osmosis, Ion Exchange Electrodeionization, Microfiltration, Ultrafiltration, MF, UF, Nanofiltration, NF Brackish Water, Seawater, Double-pass Reverse Osmosis, High Recovery, EDI, Electrodyalysis Reversal, Degasification, Softening, Activated Carbon, Multimedia Filtration, Cartidge Filtration, Membrane Filtration, Chemical Injection, Scale inhibitor, dechlorination