Oil analysis and kidney-loop filtration services
Jul 8 – Oct 26, 2026Updated Oct 26, 2026
Reviewed by Dimitry Apollonsky
Which brands AI mentions
Mentioned in
ChatGPTChatGPTGoogle AI ModeGoogle AI Mode
Widest split: Schroeder Industries, 63% on ChatGPT and 100% on Google AI Mode.
- #1Schroeder IndustriesChatGPT 63%Google AI Mode 100%
- #2Oil Filtration SystemsChatGPT 38%Google AI Mode 36%
- #3tiedDonaldsonChatGPT 13%Google AI Mode 32%
- #3tiedBennett FiltrationChatGPT 21%Google AI Mode 9%
- #3tiedClean Oil SolutionsChatGPT 29%Google AI Mode 0%
Questions and answers
Google AI ModeOct 26, 2026
- 1Schroeder Industries
- 2Schroeder Industries Fluid Analysis Services
- 3Advanced Fluid Systems Hydraulic Filtration Rentals
- 4Hy-Pro
- 5Applied Energy Co Flushing and Filtering Services
- 6Oil Filtration Systems
- 7HYDAC
- 8SunSource
- 9POLARIS Laboratories
- 10Bureau Veritas
- 11Advanced Fluid Systems, Inc.
- 12Applied Energy Company
Dealing with systemic contamination in hydraulic infrastructure requires a two-pronged approach: diagnostic oil analysis to pinpoint the exact nature of the contaminant (water, particulates, varnish, or chemical breakdown), and kidney-loop filtration/flushing to scrub the fluid and reservoirs back to target ISO cleanliness codes.
A breakdown of industrial service providers and equipment specialists offering these testing and active filtration solutions includes:
- Schroeder Industries : Offers comprehensive Schroeder Industries Fluid Analysis Services to test hydraulic oils for contamination and identify likely sources, alongside manufacturing dedicated offline filtration systems.
- Advanced Fluid Systems : Provides specialized Advanced Fluid Systems Hydraulic Filtration Rentals , supplying portable filter carts and vacuum dehydrators (like Hy-Pro units) for on-site reservoir kidney-loop cleaning and water removal.
- Applied Energy Co : Operates as dedicated fluid management specialists offering on-site Applied Energy Co Flushing and Filtering Services , which include cleaning hydraulic reservoirs and kidney-loop polishing existing fluids.
- Oil Filtration Systems : Specializes in industrial Oil Filtration Systems Rentals providing high-efficiency portable filter carts and kidney-loop setups to achieve target ISO particle counts.
- Major Labs & Equipment OEMs (HYDAC / SunSource) : For regular ongoing testing, commercial labs like Polaris Laboratories or Bureau Veritas handle high-volume oil analysis, while fluid power distributors like SunSource and HYDAC supply permanent or portable offline kidney-loop hardware.
To help narrow down the best path forward, tell me:
- What kind of contamination are you suspecting (water, high particulates, or milky/oxidized oil)?
- What is the total fluid volume across your affected systems?
I can help you decide whether to rent portable filtration carts for in-house cleanup or bring in a full-service flushing contractor.
ChatGPTOct 26, 2026
If contaminated hydraulic oil is causing system failures, you want a provider that can do more than supply filters: ideally, they can analyze the oil, identify the contamination, clean the fluid with kidney-loop filtration, and verify cleanliness afterward.
I found several providers in the United States that offer these services, including options for on-site filtration and oil analysis.
Recommended providers
1. Clean Oil Solutions
(Integrated oil services)
Offers hydraulic and lubricating oil filtration, oil analysis, monitoring, and filtration consultation. A strong starting point if you need help diagnosing contamination and developing a prevention plan.
Phone: 1-800-453-8639
Website:
2. Oil Filtration Systems
Specializes in portable kidney-loop filter carts and field services, including oil filtration, dehydration, reservoir cleaning, and varnish removal. Particularly relevant if you need to clean existing hydraulic reservoirs or arrange on-site remediation.
Phone: 830-816-3332
Website:
3. FilterIT Services, LLC
Provides on-site oil analysis, oil decontamination, kidney-loop filtration, and reservoir cleaning. Worth contacting if you need field service rather than just filtration equipment.
Phone: 225-664-3311
Location: Denham Springs, Louisiana
4. Advanced Fluid Systems
Offers fluid analysis, particulate and water testing, kidney-loop filtration panels, portable filter carts, and hydraulic troubleshooting support. A good option if you want to combine contamination testing with equipment and engineering assistance.
York, PA: 717-757-1068
Royersford, PA: 610-948-1000
Website:
Source:
Best options for the Mid-Atlantic region
If your facility is in the Washington, D.C., Maryland, or Virginia area, I would start with these two providers.
HyVal Industries
Offers on-site hydraulic flushing and oil analysis, with NAS and ISO cleanliness reporting. Its technicians handle equipment connections, fluid circulation, and sump and tank cleaning.
757-855-2026 ·
Best for: hands-on system cleaning and verification.
Advanced Fluid Systems
Offers hydraulic filtration equipment, kidney-loop panels, fluid testing, and particle-monitoring solutions.
800-606-9801 ·
Best for: filtration equipment and contamination-control support. Confirm availability of on-site service for your facility.
What to request from any provider
Ask for a proposal that includes:
- Oil analysis: particle counts to ISO 4406, water content, viscosity, and wear-metal analysis.
- Kidney-loop filtration: mobile or permanently installed offline filtration sized for your reservoir and oil type.
- Before-and-after testing: documented cleanliness results against the hydraulic equipment manufacturer's target.
- Root-cause investigation: check for water ingress, failing seals, wear debris, varnish, and contamination introduced during oil changes.
- Post-repair verification: confirm that the oil is suitable for reuse and that the contamination source has been addressed.
Filtration alone won't fix contamination that is continually entering the system or being generated by a failing component.
One question so I can narrow this down: Where is your facility located — city and state? I can focus on providers that serve your area and prioritize those offering on-site oil analysis and kidney-loop filtration as a combined service.
Sources cited in this answer6
- cleanoilsolutions.comcleanoilsolutions.com
- oilfiltrationsystems.comoilfiltrationsystems.com
- advancedfluidsystems.comHydraulic Filtration Systems - Advanced Fluid Systems
- advancedfluidsystems.comHydraulic Filtration Systems - Advanced Fluid Systems
- hyval.comHydraulic Flusing and Oil Analysis | HyVal Industries, Incorporated
- hyval.comHydraulic Flusing and Oil Analysis | HyVal Industries, Incorporated
ChatGPTOct 16, 2026
If you're dealing with recurring contamination in hydraulic systems, I'd look for an industrial fluid-services provider that combines laboratory oil analysis, mobile kidney-loop filtration, and root-cause contamination troubleshooting. Filtering the oil alone may not solve the problem if water ingress, varnish, component wear, or contaminated reservoirs are continually reintroducing contaminants.
Assuming you're sourcing services for a facility in Northern Virginia, these are the strongest leads I found, including providers elsewhere in the U.S. that offer specialized hydraulic-fluid services.
Best providers to contact
1. Dilmar Fluid Services
(Best for end-to-end remediation)
Offers oil analysis, on-site filtration and dehydration, reservoir cleaning, oil reclamation, and custom flushing. They also provide post-service sampling and cleanliness verification.
Contact: 1-800-922-5823
Fluid services and quote request
2. Oil Filtration Systems
(Best for kidney-loop specialists)
Supplies portable filtration equipment and offers on-site filtration and high-velocity flushing. Its equipment options include fine particulate filtration, vacuum dehydration, and varnish removal. The company advertises nationwide field service.
Contact: 830-816-3332; emergency service: 800-449-0262
3. HyVal Industries
A Virginia-based option for hydraulic system flushing and on-site oil analysis. HyVal reports that it provides ISO and NAS cleanliness readings and handles the physical work of connecting flushing equipment and cleaning sumps and tanks.
Location: Norfolk, Virginia
Contact: 757-855-2026
Hydraulic flushing and oil analysis
4. MP Filtri
A good option when you need detailed diagnostic testing. Its laboratory offers particle counts, water-content testing, viscosity measurements, varnish testing, wear-metal analysis, and filter-residue analysis. Confirm sample-submission arrangements and service availability for your site.
5. MRG Laboratories
An independent diagnostic option for hydraulic fluid analysis, lubricant condition monitoring, filter analysis, and root-cause failure investigations. Useful if you want laboratory evidence to help determine where contamination is coming from.
Location: York, Pennsylvania
Contact: 717-843-8884
What I would request in your quote
Ask each provider to quote the complete corrective job, rather than just the filtration equipment or a basic oil sample.
Service What to specify Initial oil analysis ISO 4406 particle count, water content, viscosity, wear metals, and oxidation or varnish testing as appropriate Kidney-loop filtration Portable off-line filtration sized to reservoir volume, oil viscosity, flow rate, and required cleanliness Water or varnish removal Appropriate dehydration or varnish mitigation if analysis confirms those contaminants System cleaning Reservoir and sump inspection, sludge removal, and flushing if contamination has spread through piping or components Final verification Before-and-after samples, target cleanliness code, water limits, and written service report Root-cause investigation Identify failed seals, dirty fill practices, damaged components, breathing issues, or other contamination entry points The target cleanliness level should be based on the equipment manufacturer's requirements and the sensitivity of the valves, pumps, and servo components—not a generic number. Kidney-loop filtration removes contaminants from circulating fluid, but reservoir sludge, ongoing water ingress, or varnish may require additional treatment.
A few details will help me narrow this down
Tell me a little about your systems so I can prioritize the most suitable vendors.
1. Where is the equipment located?
[Input placeholder: City, state, or service region] (Current value unavailable.)
2. What type of hydraulic system?
Industrial machinery / manufacturing
Hydraulic presses or injection molding
Mobile equipment / fleet
Power generation / marine
Other / multiple systems
3. What contamination are you seeing?
High particle counts / dirty oil
Water contamination
Varnish or sludge
Recurring contamination / component failures
Not yet diagnosed
4. What are you looking to source?
On-site analysis and filtration service
Lab testing plus filter-cart rental
Purchase a kidney-loop filtration unit
Full remediation, flushing, and root-cause analysis
[Find the best-fit providers]
Sources cited in this answer13
Google AI ModeOct 16, 2026
Sourcing combined oil analysis and kidney-loop filtration services depends on whether you want a turn-key managed service (where an outside expert handles testing, equipment, and execution) or if you prefer to purchase portable kidney-loop carts/skids and send your oil samples to
a lab.1. Turn-Key / Managed Filtration Services
If you need an external team to come in, analyze your fluid, set up the equipment, and scrub your systems clean:
- Schroeder Industries (Filtration Management as a Service - FMaaS) : They provide an end-to-end turn-key program. They start with comprehensive oil analysis, deploy customized kidney-loop or dehydration units directly on your reservoirs, handle ongoing maintenance, and bill based on fluid processed.
- Brenntag Lubricant Filtration and Reliability Services : Offers extensive field services including direct reservoir filtering, fluid reclamation, high-velocity flushing, and specialized mobile filtration skids.
- Local Industrial Fluid Power Distributors : Companies like SunSource often provide fluid-reliability engineering, custom filtration skids, and on-site field maintenance support.
2. Standalone Oil Analysis Laboratories
To baseline your ISO cleanliness codes and pinpoint water, particulate, or varnish contamination before and after filtering:
- DLS / ALS Global / Bureau Veritas : Major commercial oil-analysis laboratories providing rapid turnaround on particle counting (ISO 4406), Karl Fischer water content, and elemental wear metals.
- Trico Corporation or Emerson Bearing / Fluid Power partners : Frequently tie in laboratory oil diagnostics with fluid cleanliness recommendations.
3. Sourcing Portable Kidney-Loop Equipment (Do-It-In-House)
If your team plans to run the filtration loops yourselves after getting lab data back:
- SunSource : Carries pre-engineered kidney-loop filter systems (such as Schroeder units) with varying flow rates and micron ratings.
- Empire Lube Equipment : Supplies compact portable kidney-loop filtration kits and carts (such as Liquidynamics lines) equipped with micro-glass elements for high-viscosity or standard fluid cleanup.
- HYDAC : Offers specialized mobile and air-operated filtration and de-watering skid systems.[1][2][3]
To help me narrow down the best path forward, could you tell me:
- What is the total fluid volume across your hydraulic reservoirs?
- What kind of contaminant are you primarily fighting (water, heavy particulates, or varnish/sludge)?
Also asked as
- I need to find companies that perform oil analysis and kidney-loop filtration to address contamination issues in our hydraulic systems.
