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Replenish your low-force pipette tips with sterile, low-retention refill layers.
MTC Bio SofTouch ULF stacked refills provide sterile, non-filtered, low-retention tips for SofTouch ULF and Rainin LTS pipettors. Choose 20 or 200 µL tips in packs of 960, or 1,000 µL tips in packs of 576. Each refill layer holds 96 tips; confirm the tip size and rack setup before ordering.
20–1,000 µL
Three tip capacities
96 tips
Per refill layer
960 or 576
Tips per pack
Sterile
Non-filtered refills
Why Labs Choose SofTouch ULF Stacked Refills
Low-force fit
MTC Bio specifies a cylindrical collar and positive stop designed to reduce attachment and ejection forces.
Low-retention polypropylene
Tips use medical-grade polypropylene manufactured for low-retention performance.
Sterile refills
All three RL options are supplied presterilized and are non-filtered.
Choose your pack size
The 20 and 200 µL packs contain 10 layers of 96; the 1,000 µL pack contains 6 layers of 96.
Which ULF Refill Do I Need?
P4615-20RL: 20 µL
10 layers of 96; 960 tips per pack. MTC Bio lists this size for compatible 2, 10 and 20 µL pipettors.
P4615-200RL: 200 µL
10 layers of 96; 960 tips per pack. MTC Bio lists this size for compatible 50, 100 and 200 µL pipettors.
P4615-1000RL: 1,000 µL
6 layers of 96; 576 tips per pack. MTC Bio lists this size for compatible 1,000 µL pipettors.
Need a filter?
These RL refills are non-filtered. Choose a separately sold filtered racked format when your protocol requires a barrier.
Refill Layers for Low-Force Pipetting
A cylindrical collar and positive stopping point are designed to provide a consistent seal with lower attachment and ejection forces. MTC Bio specifies these tips for SofTouch ULF and Rainin LTS pipettors. Refills and prefilled racks are distinct formats; pipettor compatibility does not establish third-party rack interchangeability.
Typical Applications
- Routine sample and buffer transfer using compatible low-force pipettors
- Replenishing a laboratory stock of non-filtered tips
- Molecular biology workflows where specified cleanliness meets the method
- Preparing sample dilutions and reagents with the appropriate tip size
Confirm material compatibility and your method’s requirements before use. No additional performance or regulatory certification is implied.
Practical Bench Tip
Check the pipettor family, tip capacity and refill-rack setup before ordering. These refills are non-filtered and do not provide an aerosol-barrier filter.
Related Laboratory Products
Alternative format: 200 µL SofTouch ULF non-filtered racked tips P4615-200R.
Alternative format: 1,000 µL SofTouch ULF filtered racked tips P4615-1000F.
Alternative format: MTC Bio ULF wide-bore pipette tips.
Related formats are sold separately. Check your pipettor model, tip capacity and rack requirements before ordering.
Frequently Asked Questions
Are these an alternative to Rainin LTS tip refills?
MTC Bio specifies SofTouch ULF tips for Rainin LTS and SofTouch ULF pipettors, making these sterile, non-filtered stacked refills an alternative to consider. For example, P4615-1000RL supplies 576 low-retention, 1,000 µL tips in 6 refill layers; Rainin 30389295 supplies 768 in 8 refills. Confirm your pipettor and rack requirements; tip fit does not establish refill-rack interchangeability. Trademarks belong to their respective owners; comparison does not imply endorsement, affiliation or common manufacturing origin.
How does P4615-1000RL compare with Rainin 30389295?
Both are listed as sterile, non-filtered, low-retention 1,000 µL stacked refills for LTS pipetting. P4615-1000RL contains 576 tips in 6 layers of 96; Rainin 30389295 contains 768 tips in 8 refills. Confirm rack fit and validate performance before switching; these are products of different manufacturers. Rainin LTS is a registered trademark of Mettler-Toledo Rainin, LLC. MTC Bio is not affiliated with or endorsed by the trademark owner.
Which refill fits my pipettor size?
MTC Bio lists P4615-20RL for compatible 2, 10 and 20 µL pipettors; P4615-200RL for 50, 100 and 200 µL; and P4615-1000RL for 1,000 µL pipettors. These are instrument-size selections, not independently validated working ranges.
Does every refill pack contain 960 tips?
No. P4615-20RL and P4615-200RL each contain 10 layers of 96, or 960 tips. P4615-1000RL contains 6 layers of 96, or 576 tips.
Are these filtered tips?
No. P4615-20RL, P4615-200RL and P4615-1000RL are non-filtered. If your protocol calls for a filter, review the separately sold P4615-20F, P4615-200F or P4615-1000F racked options.
How is P4615-200RL different from P4615-200R?
Both are sterile non-filtered 200 µL tips, 960 per pack. P4615-200RL consists of 10 stacked refill layers of 96; P4615-200R consists of 10 prefilled racks of 96.
Are the refills sterile and low-retention?
Yes. MTC Bio lists all three RL tips as sterile and low-retention. It states that racked and refill tips are wrapped and certified free of endotoxins, pyrogens, RNase, DNase and PCR inhibitors.
Do these refills fit every LTS-compatible rack?
Pipettor compatibility does not establish refill-carrier or rack interchangeability. MTC Bio lists the separately sold P4615-ER20, P4615-ER200 and P4615-ER1000 empty racks by corresponding tip size; confirm rack fit for your setup.
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