Essential Guide to Choosing In-Line Filters for Groundwater Sampling
EE+S carries three in-line filter lines for groundwater sampling, all rated to 0.45 micron: the Proactive GoPro (700 cm², general metals sampling), the QED QuickFilter (up to 609 cm², also available in smaller capacities for less turbid conditions), and the Waterra FHT-45/FMT-45 (600 cm², built for high-turbidity conditions). Match filter size and capacity to your site’s turbidity and sample volume.
Which In-Line Filter Do You Need?
| Filter | Micron / Area | Best For | Available at EE+S |
|---|---|---|---|
| GoPro 700cm² (Proactive) | 0.45 micron, 700 cm² | General metals sampling; 3/8″ inlet fits barbed or threaded setups | Buy |
| QED QuickFilter | 0.45 micron, up to 609 cm² (smaller sizes down to 30 cm² available) | Turbid conditions, metals analysis, purging; heat-sealed for durability | Buy |
| Waterra FHT-45 / FMT-45 | 0.45 micron, 600 cm² (FHT) or reduced area (FMT) | High-turbidity conditions needing longer filter life | Buy |
Filter Options, Explained
GoPro 700cm² .45 Inline Micron Filter (Proactive)
EE+S’s GoPro 700cm² .45 Inline Micron Filter balances capacity and affordability, with a 3/8″ inlet tip that works as either a barbed adapter or threaded fitting. Its 700 cm² surface area makes it a solid general-purpose choice for metals sampling.
QED QuickFilter
The QED QuickFilters line uses heat-sealed (not glued) polyethersulfone media and comes in multiple sizes, up to 609 cm², filtering particles as small as 0.45µm at pressures up to 60 psi. QuickFilter products are batch-checked to align with EPA sampling guidelines, and the smaller sizes are a good fit when a site’s turbidity doesn’t call for the largest capacity.
Waterra 0.45 Micron Inline Groundwater Filter
The Waterra Inline Groundwater Filter line (FHT-45 and FMT-45 models) is pre-washed and built for high-turbidity conditions, with the FHT-45’s 600 cm² of media giving it strong particle retention and a longer field life than smaller-capacity filters.
Choosing the Right Filter
- Match capacity to turbidity — high-turbidity sites need the larger-capacity options (GoPro 700 cm², Waterra FHT-45, or a larger QuickFilter); low-turbidity sites can use a smaller QuickFilter size.
- Confirm the pump connection — filter inlet style (barbed vs. threaded) needs to match your sampling pump or bailer setup.
- Check the analysis requirement — 0.45 micron is standard for dissolved metals sampling across all three lines EE+S carries.
Availability
All three filter lines are consumables sold by EE+S, not rented. Browse the full filters catalog for current sizes and pricing, including bag filters and geofilter membranes for non-inline applications.
FAQ
What micron filter do I need for metals analysis?
0.45 micron is the standard across EE+S’s in-line filter lines — GoPro, QuickFilter, and Waterra are all available at this rating and suitable for dissolved metals sampling.
What’s the difference between the GoPro, QuickFilter, and Waterra filters?
All three filter to 0.45 micron; the differences are in capacity and connection style. GoPro offers 700 cm² with a flexible barbed-or-threaded inlet, QuickFilter comes in multiple sizes (up to 609 cm²) with heat-sealed construction, and Waterra’s FHT-45/FMT-45 line is built specifically for high-turbidity conditions.
Which filter should I use for high-turbidity groundwater?
The Waterra FHT-45 or the GoPro 700 cm² are the better fits — both offer more filtering surface area than a standard-size QuickFilter, which extends filter life before clogging in turbid conditions.
Related Resources
- Environmental sampling & safety supplies
- Grundfos submersible pump comparison
- Full sampling supplies catalog
Get the Right Filter for Your Sampling Project
Browse in-line filters in our catalog or contact EE+S to talk through turbidity, capacity, and connection requirements with a specialist.