The ISO Cleanliness Code (per ISO4406-1999) is used to quantify particulate contamination levels per milliliter of fluid at 3 sizes - 4µ, 6µ, and 14µ. It is expressed in 3 numbers (example 19/17/14) where each number represents a contaminant level code for the correlating particle size. The code includes all particles of the specified size and larger.It is important to note that each time a code increases, the quantity range of particles is doubling. Inversely, as a code decreases by one the contaminant level is cut in half.
2 min read
Understanding ISO Codes
By Dustin Flynn on Thu, Feb. 25, 2021
Topics: hydraulic fluid dirt hydraulic filters Gearbox filtration vacuum dehydration filter housing sizing plastic injection molding manufacturer oil darkening mining fluid samples total systems cleanliness metal analysis filter performance paper mill fluid transfer filters hydraulic valve coalesce technology filter cart cleanliness COD hydraulic oil gearbox duplex high-pressure compressor filter elements lube oil turbine oil desiccant demulsibility
1 min read
Removing Water from Diesel; Hy-Pro's Coalescing Technology
By Dustin Flynn on Wed, Mar. 25, 2020
In this Video we provide a brief description and demonstration of Hy-Pro's signature coalescing technology found in our FCLCOD and COT model lines.
Topics: filters coalesce technology fuel cleanliness COD video contaminination turbine oil
4 min read
Servo Valve Failure: A Video Case Study
By Dustin Flynn on Wed, Jul. 10, 2019
Servo valves are a tiny but essential component of manufacturing processes. However, as you will see in the video case study below, servo valves can fall victim to failure due to excessive fluid contamination. Watch the video below to see how a tire plant in the south diagnosed and dealt with a servo valve problem that would have resulted in thousands of dollars of damage.

Topics: contamination case study servo valves
6 min read
Getting to Know Multi-Pass Testing: Comparing Tests
By Dustin Flynn on Wed, Apr. 24, 2019
In the world of filtration, we differentiate filters and measure their performance using various testing methods, otherwise known as multi-pass testing. In order to understand the testing process, we've created two videos that cover how filters are tested. In the video below, we'll cover four different methods of testing: ISO 16889, which is the industry standard test; ISO/CD 23369 Cyclic Flow Test, which is proposed to replace the current industry standard test; The Cyclic Stabilization Test; and Hy-Pro’s Dynamic Filter Efficiency Test.

Topics: filters DFE multi-pass testing
3 min read
Getting to Know Multi-Pass Testing: Terms and Definitions
By Dustin Flynn on Fri, Apr. 12, 2019
In the world of filtration, we differentiate filters and measure their performance using various testing methods, otherwise known as multi-pass testing. In order to understand the testing process, we've created two videos that cover how filters are tested. In the first video below, we'll go over the terms and definitions you need to know to understand how multi-pass testing works and what's measured by it.

Topics: filters DFE multi-pass testing
4 min read
Steam Turbines and the Battle for Good Demulsibility
By Jennifer Yeadon on Fri, Feb. 01, 2019
Topics: demulsibility
3 min read
Demulsibility: What is it and why is it important? [Video]
By Dustin Flynn on Thu, Jan. 24, 2019
Watch this 5-minute video to learn about Demulsibility and how essential its characteristics are to turbine oil.
Topics: ICB demulsibility
4 min read
Questions You Need to Ask About Fluid Filtration
By Jennifer Yeadon on Thu, Aug. 09, 2018
The world of industrial fluid filtration can get a little...murky. Whether it's a lack of information or just simply not knowing, there are many concepts that may not be clear to someone just entering the industry. That's why we're here -- fluid filtration experts that can guide you through any issue you have. To shed some light and educate, here are some frequently asked questions and their answers.
Topics: hydraulic fluid fluid filtration
2 min read
The Benefits of Offline Filtration
By Dustin Flynn on Wed, Apr. 25, 2018
At Hy-Pro, our mission is to make our customers as efficient as possible, and we achieve that with the highest quality filtration products and plans. Our Total System Cleanliness strategies maximize uptime, productivity and prevent costly fluid contamination-related failures. We often achieve that by simply upgrading our customers to Hy-Pro DFE rated filters and Hy-Dry Breathers. But, oftentimes, too many systems have insufficient filtration, or worse off, no filtration at all; this creates the need for a whole range of offline particulate filtration solutions.
Topics: offline filtration
5 min read
Hoosier Hospitality: Exploring Indy During the Reliable Plant Conference & Exhibition
By Dustin Flynn on Wed, Apr. 11, 2018
It’s time for the 2018 Reliable Plant Conference & Exhibition and this year it’s being held in our favorite city -- Indianapolis! We know this city pretty well, so we wanted to offer you some recommendations for restaurants and places to visit in our fair city. Keep reading to learn about our favorite spots in Indy.