Filtration - Balston | Parker
Centro’s Filtration division helps businesses run smoothly by providing high-quality filtration solutions that remove contaminants, protect equipment, and improve product quality. Whether air or liquid filtr...
Categories from Balston (5)
FRL's
Compressed air FRLs, which encompass Filter, Regulator, and Lubricator components, are integral to pneumatic systems. These units filter, regulate air pressure, and provide lubrication to ensure clean, controlled, and well-maintained compressed air for various industrial applications. Compressed air FRLs are crucial for optimizing the performance and longevity of pneumatic equipment in settings such as manufacturing and automation.
Filter Elements
Compressed air filter elements are integral components within filtration systems, designed to remove impurities, contaminants, and particles from compressed air. These elements are crucial in ensuring that the compressed air remains clean and free from pollutants, safeguarding the integrity of pneumatic equipment and various applications. Compressed air filter elements are versatile and applicable across various industries where air quality is paramount.
Parts and Accessories
Compressed air parts and accessories encompass a wide range of components that enhance the functionality and performance of pneumatic systems. From connectors and hoses to couplers and regulators, these accessories are pivotal in optimizing the operation of compressed air systems. They are utilized across various industries and applications, ensuring the reliability and efficiency of pneumatic equipment.
Dryers
Compressed air dryers are essential components in pneumatic systems that remove moisture and humidity from compressed air. These dryers ensure that the air delivered to pneumatic tools and equipment is dry and free from water vapor, preventing damage and enhancing system efficiency. They find wide applications in various industries where compressed air quality is crucial for operational success.
Drains
Compressed air drains are essential components in air compressor systems, designed to remove condensate and moisture from the compressed air, ensuring the delivery of clean and dry air. These drains are crucial in preventing damage to pneumatic equipment and maintaining system efficiency. Compressed air drains are widely used in various applications, offering effective moisture removal and improved performance.
Filter
Filter
1,448 items
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The Parker Balston 200-176-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. It is commonly found in pharmaceutical, chemical processing, and industrial manufacturing applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$1,241.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-BX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 2µm for high-efficiency removal of oil aerosols and fine particulates from gas streams. It is commonly found in laboratory, food and beverage, and pharmaceutical applications. Backed by Parker Balston's commitment to quality, the 200-185-BX is built to perform under real-world conditions. This product meets relevant ISO 9001 standards.
$931.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-DX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 25µm, designed to remove solids and suspended liquids from compressed air and gases. It is commonly found in chemical processing, pharmaceutical, and food and beverage applications. Parker Balston is recognized globally for engineering products that meet strict performance standards.
$931.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. It is commonly found in food and beverage, pharmaceutical, and laboratory applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards.
$1,381.97
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-30-R is a Replacement Filter Element. It is commonly found in pharmaceutical, food and beverage, and industrial manufacturing applications. Parker Balston products are trusted by engineers and specifiers worldwide.
$935.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-30-SR is a Replacement Filter Element. Typical applications span pharmaceutical, food and beverage, and semiconductor environments. Parker Balston products are trusted by engineers and specifiers worldwide.
$2,381.94
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-371H is a Replacement Filter Element. Typical applications span industrial manufacturing, pharmaceutical, and food and beverage environments. The 200-35-371H reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$1,367.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-AQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency for critical process gas filtration. Typical applications span chemical processing, food and beverage, and laboratory environments. The 200-35-AQ reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$824.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 2µm for precision filtration in oxygen service and high-temperature environments. This product serves professionals across laboratory, chemical processing, and food and beverage sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$540.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 2µm for high-efficiency removal of submicron particles. This product serves professionals across industrial manufacturing, pharmaceutical, and laboratory sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$538.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 2µm for high-efficiency removal of oil aerosols and fine particulates from gas streams. It is commonly found in laboratory, food and beverage, and industrial manufacturing applications. Parker Balston products are trusted by engineers and specifiers worldwide.
$1,345.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-CH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 10µm for oxygen-compatible filtration up to 1000°F. This product serves professionals across industrial manufacturing, food and beverage, and pharmaceutical sectors. The 200-35-CH reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$551.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-CX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 10µm for intermediate removal of liquids and particulates from compressed gases. It is commonly found in pharmaceutical, laboratory, and food and beverage applications. Parker Balston is recognized globally for engineering products that meet strict performance standards. This product meets relevant ISO 9001 standards.
$1,345.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-DH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 25µm, suitable for oxygen service up to 1000°F (538°C). This product serves professionals across industrial manufacturing, food and beverage, and pharmaceutical sectors. Parker Balston is recognized globally for engineering products that meet strict performance standards.
$540.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-DX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 25µm, designed to remove solids and suspended liquids from compressed air and gases. This product serves professionals across chemical processing, pharmaceutical, and industrial manufacturing sectors. Backed by Parker Balston's commitment to quality, the 200-35-DX is built to perform under real-world conditions. This product meets relevant ISO 9001 standards.
$1,345.97
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-35-DXS is a Replacement Filter Element. It is commonly found in semiconductor, laboratory, and pharmaceutical applications. Parker Balston products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ISO 9001 requirements.
$1,351.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. This product serves professionals across food and beverage, laboratory, and pharmaceutical sectors. The 200-35-SA reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$2,008.95
Available for Purchase
Subject to factory lead times
The Parker Balston 200-70-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. This product serves professionals across laboratory, industrial manufacturing, and semiconductor sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$3,289.92
Available for Purchase
Subject to factory lead times
Part number 200-75-R from Parker Balston is a Replacement Filter Element. Typical applications span food and beverage, pharmaceutical, and industrial manufacturing environments. Backed by Parker Balston's commitment to quality, the 200-75-R is built to perform under real-world conditions.
$1,555.96
Available for Purchase
Subject to factory lead times
The 200-75-SR from Parker Balston is a Replacement Filter Element. It is commonly found in pharmaceutical, semiconductor, and laboratory applications. Parker Balston products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ISO 9001 requirements.
$2,344.94
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-80-371H is a Replacement Filter Element. It is commonly found in food and beverage, chemical processing, and laboratory applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$2,255.94
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-AQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency for critical process gas filtration. This product serves professionals across pharmaceutical, laboratory, and chemical processing sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$1,520.96
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-BH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 2µm for precision filtration in oxygen service and high-temperature environments. Typical applications span pharmaceutical, laboratory, and industrial manufacturing environments. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$952.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-BQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 2µm for high-efficiency removal of submicron particles. It is commonly found in pharmaceutical, industrial manufacturing, and food and beverage applications. Backed by Parker Balston's commitment to quality, the 200-80-BQ is built to perform under real-world conditions.
$948.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-176-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. It is commonly found in pharmaceutical, chemical processing, and industrial manufacturing applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$1,241.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-BX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 2µm for high-efficiency removal of oil aerosols and fine particulates from gas streams. It is commonly found in laboratory, food and beverage, and pharmaceutical applications. Backed by Parker Balston's commitment to quality, the 200-185-BX is built to perform under real-world conditions. This product meets relevant ISO 9001 standards.
$931.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-DX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 25µm, designed to remove solids and suspended liquids from compressed air and gases. It is commonly found in chemical processing, pharmaceutical, and food and beverage applications. Parker Balston is recognized globally for engineering products that meet strict performance standards.
$931.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-185-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. It is commonly found in food and beverage, pharmaceutical, and laboratory applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards.
$1,381.97
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-30-R is a Replacement Filter Element. It is commonly found in pharmaceutical, food and beverage, and industrial manufacturing applications. Parker Balston products are trusted by engineers and specifiers worldwide.
$935.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-30-SR is a Replacement Filter Element. Typical applications span pharmaceutical, food and beverage, and semiconductor environments. Parker Balston products are trusted by engineers and specifiers worldwide.
$2,381.94
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-371H is a Replacement Filter Element. Typical applications span industrial manufacturing, pharmaceutical, and food and beverage environments. The 200-35-371H reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$1,367.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-AQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency for critical process gas filtration. Typical applications span chemical processing, food and beverage, and laboratory environments. The 200-35-AQ reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$824.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 2µm for precision filtration in oxygen service and high-temperature environments. This product serves professionals across laboratory, chemical processing, and food and beverage sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$540.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 2µm for high-efficiency removal of submicron particles. This product serves professionals across industrial manufacturing, pharmaceutical, and laboratory sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$538.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-BX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 2µm for high-efficiency removal of oil aerosols and fine particulates from gas streams. It is commonly found in laboratory, food and beverage, and industrial manufacturing applications. Parker Balston products are trusted by engineers and specifiers worldwide.
$1,345.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-CH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 10µm for oxygen-compatible filtration up to 1000°F. This product serves professionals across industrial manufacturing, food and beverage, and pharmaceutical sectors. The 200-35-CH reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$551.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-CX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 10µm for intermediate removal of liquids and particulates from compressed gases. It is commonly found in pharmaceutical, laboratory, and food and beverage applications. Parker Balston is recognized globally for engineering products that meet strict performance standards. This product meets relevant ISO 9001 standards.
$1,345.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-DH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 25µm, suitable for oxygen service up to 1000°F (538°C). This product serves professionals across industrial manufacturing, food and beverage, and pharmaceutical sectors. Parker Balston is recognized globally for engineering products that meet strict performance standards.
$540.99
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-DX is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre coalescing cartridge rated at 25µm, designed to remove solids and suspended liquids from compressed air and gases. This product serves professionals across chemical processing, pharmaceutical, and industrial manufacturing sectors. Backed by Parker Balston's commitment to quality, the 200-35-DX is built to perform under real-world conditions. This product meets relevant ISO 9001 standards.
$1,345.97
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-35-DXS is a Replacement Filter Element. It is commonly found in semiconductor, laboratory, and pharmaceutical applications. Parker Balston products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ISO 9001 requirements.
$1,351.97
Available for Purchase
Subject to factory lead times
The Parker Balston 200-35-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. This product serves professionals across food and beverage, laboratory, and pharmaceutical sectors. The 200-35-SA reflects Parker Balston's long-standing reputation for quality and innovation. It is designed to comply with applicable ISO 9001 requirements.
$2,008.95
Available for Purchase
Subject to factory lead times
The Parker Balston 200-70-SA is a Replacement Filter Element. Replacement Filter Element (200 Series). Sterile air cartridge designed to remove bacteria and viable organisms from compressed air and gas lines. This product serves professionals across laboratory, industrial manufacturing, and semiconductor sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$3,289.92
Available for Purchase
Subject to factory lead times
Part number 200-75-R from Parker Balston is a Replacement Filter Element. Typical applications span food and beverage, pharmaceutical, and industrial manufacturing environments. Backed by Parker Balston's commitment to quality, the 200-75-R is built to perform under real-world conditions.
$1,555.96
Available for Purchase
Subject to factory lead times
The 200-75-SR from Parker Balston is a Replacement Filter Element. It is commonly found in pharmaceutical, semiconductor, and laboratory applications. Parker Balston products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ISO 9001 requirements.
$2,344.94
Available for Purchase
Subject to factory lead times
Engineered by Parker Balston, the 200-80-371H is a Replacement Filter Element. It is commonly found in food and beverage, chemical processing, and laboratory applications. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$2,255.94
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-AQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency for critical process gas filtration. This product serves professionals across pharmaceutical, laboratory, and chemical processing sectors. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. This product meets relevant ISO 9001 standards.
$1,520.96
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-BH is a Replacement Filter Element. Replacement Filter Element (200 Series). High-temperature quartz cartridge rated at 2µm for precision filtration in oxygen service and high-temperature environments. Typical applications span pharmaceutical, laboratory, and industrial manufacturing environments. As a leader in filtration, purification, and gas generation, Parker Balston manufactures every component to exacting standards. It is designed to comply with applicable ISO 9001 requirements.
$952.98
Available for Purchase
Subject to factory lead times
The Parker Balston 200-80-BQ is a Replacement Filter Element. Replacement Filter Element (200 Series). Microfibre particulate cartridge rated at 2µm for high-efficiency removal of submicron particles. It is commonly found in pharmaceutical, industrial manufacturing, and food and beverage applications. Backed by Parker Balston's commitment to quality, the 200-80-BQ is built to perform under real-world conditions.
$948.98
Available for Purchase
Subject to factory lead times
FAQS
- Industrial filtration is the process of removing unwanted contaminants — solid particles, liquids, gases, and biological material — from air, water, process fluids, and gas streams in manufacturing and processing facilities. It is important because contamination directly impacts product quality, equipment life, worker safety, and regulatory compliance. Without effective filtration, particulates damage pumps, valves, heat exchangers, and instrumentation; airborne dust creates explosion hazards and respiratory risks; and product contamination leads to batch rejection, customer complaints, and regulatory violations. Filtration technologies span a wide range — from simple Y-strainers that catch pipe debris to sub-micron cartridge filters that purify pharmaceutical-grade liquids, from bag filters handling high-volume process streams to coalescing filters that remove oil aerosols from compressed air. The right filtration strategy protects capital equipment, ensures product meets specification, keeps workers safe, and helps facilities comply with EPA, OSHA, FDA, and other regulatory requirements.
- Choosing the right filter starts with four questions: what are you filtering (liquid, gas, air, or steam), what contaminants are you removing (particles, oil, water, biological material), what particle size must be captured (measured in microns), and what flow rate and pressure does the system require? For liquid filtration, bag filters and cartridge filters are the primary options — bag filters handle higher flow rates and larger particle loads cost-effectively, while cartridge filters provide finer filtration down to sub-micron levels. For gas and compressed air filtration, particulate filters remove solid particles, coalescing filters remove oil and water aerosols, and adsorption filters remove oil vapor and odors. For pipeline protection, strainers (Y-strainers and basket strainers) are installed upstream of pumps, valves, and instruments to catch large debris. For airborne dust and particulate, dust collectors with cartridge or bag filtration media capture contaminants at the source. The operating environment, chemical compatibility, temperature, and regulatory requirements further narrow the selection to the correct filter type, media material, and housing configuration.
- A micron rating indicates the size of the smallest particles a filter is designed to capture, measured in micrometers (µm). One micron is one-millionth of a meter — for reference, a human hair is roughly 70 microns in diameter, and bacteria are typically 0.5 to 5 microns. Filters are available from coarse ratings (100–200 microns for large debris) down to sub-micron ratings (0.01–1 micron for fine particulate, oil aerosols, and biological contaminants). Selecting the right micron rating depends on what you are protecting downstream and the quality specification your process requires. A coarse strainer (40–100 microns) upstream of a pump protects the pump from pipe scale and debris. A 5–25 micron bag or cartridge filter in a process line removes visible particulates. A 1 micron or finer cartridge filter is needed for pharmaceutical, food and beverage, or electronics manufacturing applications where product purity standards are stringent. Also consider whether you need a nominal rating (captures a percentage of particles at the stated size) or an absolute rating (captures virtually all particles at the stated size) — absolute-rated filters provide higher assurance for critical applications.
- Filter replacement or cleaning frequency depends on the contaminant load, flow rate, filter type, and how you monitor filter condition. The most reliable indicator is differential pressure — the pressure drop across the filter measured between the inlet and outlet. A clean filter has a low differential pressure; as the filter captures contaminants, the media becomes increasingly restricted and the differential pressure rises. Most filter housings include differential pressure gauges or ports for gauges. When the differential pressure reaches the manufacturer's recommended maximum (typically 15–35 psi for liquid filters, 2–10 psi for gas filters), the filter element should be replaced or cleaned. Operating beyond the maximum differential pressure risks filter bypass, media collapse, or contaminant breakthrough. In practice, many facilities establish a time-based replacement schedule as a baseline (monthly, quarterly, or semi-annually depending on conditions) and supplement it with differential pressure monitoring. Applications with highly variable contaminant loads benefit most from continuous differential pressure monitoring with alarms set at warning and change-out thresholds.