Series 500

High Performance Liquid Filter Bags

The 3M™ Series 500 High Performance Liquid Filter Bag which incorporates the patented bypass and transport layer design that maximizes the amount of surface area in each bag. The result is a unique filter designed to improve performance and reduce operating costs. The 3M filter contains up to 38 ft2 of usable filter media. Compare this with only 4.4 ft2 for most competitive filter bags and 0.65 ft2 for most competitive cartridges.

To make use of this entire surface area, the Series 500 Liquid Filter Bag is constructed using the patented Bypass/Transport concept invented by 3M researchers. Specially designed bypass holes are cut into certain areas of the filter media to prevent premature blinding of the filter. In conjunction with the bypass design, a second media called a transport layer helps to distribute fluid flow evenly through the filter. The outer layers of the filter provide a highly uniform barrier for final particle filtration. This construction results in very high dirt loading capacity, even at high flow rates. There are no sewn seams used in any of the filtering layers, thus allowing high filtration efficiencies for fine particles.


Prefilters or final filters for:

  • Acids and bases
  • Amines
  • Beer and wine
  • Carbon beds
  • Completion fluids
  • Deep wells
  • Desalination
  • DI resins
  • Edible oils
  • EDM fluids
  • Fructose
  • Glycol
  • Groundwater clean-up
  • Laundry water
  • Liquor
  • Machine coolants
  • Magnetic media
  • Makeup water
  • Organic solvents
  • Photo chemicals
  • Plating solutions
  • RO membranes
  • Storm water
  • UF membranes
  • Ultrapure water
  • Wastewater
  • Waterflood
  • Workover fluids

Materials of Construction

Filter Media: Meltblown polypropylene microfibre filter media provides high particle removal efficiency for high quality filtration with broad chemical compatibility and is silicone free. The filter complies with FDA regulations governing food grade materials allowed for direct food contact in food and beverage processing.
Ring and Bottom Clamp: Stainless Steel

Particle Removal Efficiency

Product Model Number 522 525 527 529
Efficiency @ 99% 2.5 5.0 15 48
Efficiency @ 95% 1.5 3.0 9 35
Efficiency @ 90% 0.9 1.5 8 30
Efficiency @ 75% < 0.7 < 1.0 < 7 22
Efficiency @ 50% < 0.7 < 1.0 4 8
Efficiency: The Series 100 High Performance Filter Bags are rated using a silica test challenge in water at 25 gpm (5.7 cu m/hr). The results reported are typical initial efficiencies taken within ten minutes of the start of the test an

Dimensions (Nominal)

Outer Diameter: 7 inches 17.8 cm
Length: 32 inches (#2 size) 81.3 cm

Operating Conditions

Maximum Operating Temperature: 180°F 82°C.

Recommended Flow:
(for normal loading in water)
25 gpm 5.7 cu m/hr
Suggested Maximum Flow:
(in water)
50 gpm 11.4 cu m/hr
Suggested Maximum Differential Pressure: 35 psid 2.4 bar
Product Attributes
RR 2.5 to 48μ nominal
MT80 ̊C
MoC Polypropylene
MDP 2.4bar @20 ̊C
Brand 3M
Q FDA compliant to 21CFR177-1520
RR Retention Rating
MT Maximum temperature recommended of a working product in degrees centigrade
MoC Primary material of construction
MoC Primary material of construction
MP Maximum working pressure of housing in bar
Brand Manufacturing brand name supplying the product
FE Filter efficiency
Q Quality assurances and certificates validating this product