Merck takes pride in manufacturing the most reliable performance syringe filter devices. MM syringe filters are designed and manufactured to minimize column clogging and maximizing performance.  
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4 mm Millex® filters  Sample volume: ≤ 1 mL  Features: Very low nonspecific binding and hold-up volume minimizes loss of small samples during filtration.
  
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Millex-LCR filters for HPLC  Sample volume:  ≤100 mL  Features: Low extractable filters for both aqueous and organic solvents. 
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13 mm Millex® filters  Sample volume: 1-10 mL  Features: Overmolded design for higher operating pressures and faster filtration 
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IC Millex® filters for ion chromatography  Sample volume: 1-10 mL  Features: Low binding, low extractable PTFE membrane removes particulates from aqueous and mild organic solvents for cleaner IC spectra
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25 mm Millex® filters  Sample volume: ≤100 mL  Features: Filters with polyethylene housings available with a wide selection of membranes 
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HPF Millex® filters for high particulate filtration  Sample volume: ≤100 mL  Features: Integrated prefilter yields two to four times greater throughput than traditional syringe filters.
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33 mm Millex® filters  Sample volume: ≤100 mL  Features: Larger filter surface (almost 20% more surface area than 25 mm filters) for increased flow rates and throughput. 
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Samplicity® filtration system with Millex® Samplicity® Filters  Sample volume: 300 µL – 2 mL  Features: Prepares multiple samples simultaneously; ergonomic design simplifies membrane filtration; vacuum-powered device improves throughput and sample recovery.
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