Bulk & Racked Pipette Tips

What Are Bulk & Racked Pipette Tips?

Racked pipette tips are pre-loaded into a 96-position hinged polypropylene rack (8 rows × 12 columns), matched to standard single-channel and 8-channel multichannel pipette workflows. Bulk tips are supplied as loose tips in resealable bags of 500–1,000 or more, intended for self-loading into existing rack frames or bulk-bag dispensers. For labs that discard full racks after each use, bulk bags offer a significant reduction in per-tip cost; for labs requiring sterile, pre-organised tips, hinged racks are the standard. Choose racked tips for sterile/organised workflows; choose bulk bags when sterility is not required and cost per tip is the primary driver.

What You Will Find:

• Standard Universal Tips – Medical-grade pipette tips ranging from 0.1uL to 5000uL for broad multi-brand compatibility.
• Low Retention Tips – Engineered with hydrophobic surfaces to ensure maximum sample recovery and zero liquid hang-up.
• Extended Length Tips – Specialized long-reach designs for safe, contamination-free sampling from deep vessels and tubes.
• Racked Sterile Tips – Pre-loaded, RNase/DNase-free formats for immediate use in sensitive molecular workflows.
• Bulk Non-Sterile Tips – High-volume, economical supply bags for routine laboratory applications and high-throughput use.
• Empty Tip Boxes – Durable, reusable racks designed for organized storage and seamless integration with reload systems.

How to Choose Between Bulk and Racked Formats

Sterility Requirements
Racked tips are available pre-sterilised (EO or gamma) and are individually certified DNase-free, RNase-free, ATP-free, human DNA-free, and PCR inhibitor-free per lot — required for cell culture, PCR setup, RNA work, and any sterility-sensitive application. Bulk bag tips are typically non-sterile; they can be autoclaved by the user at 121°C (15 psi, 15 min) before use if sterility is needed, though autoclaving adds handling time.

Throughput and Format
Racked 96-tip formats support 8-channel multichannel pipetting with aligned well positions. Bulk bags are efficient for single-channel repetitive dispensing where tips are picked individually. For high-throughput multichannel workflows, the Refill Station (reload insert) format combines the alignment benefits of a rack with the lower cost of bulk supply.

Volume Range
10 µL tips: for P2, P10 single-channel pipettes, microvolume dispensing, sequencing gel loading. 200 µL tips: the highest-volume format in most research labs — P20, P100, P200 range. 1,000 µL / 1,250 µL tips: for P1000 pipettes; available in standard and extended-length formats for deep-tube access. Standard-length tips suit standard Eppendorf and Falcon tubes; extended-length tips reach 15 mL and 50 mL conical tube bottoms.

Autoclavable Racks
Polypropylene hinged racks withstand repeated autoclave cycles at 121°C without dimensional distortion. Confirm the rack material is PP (not polystyrene) before autoclaving — PS racks deform under steam sterilisation.

Pack Sizes and Case Economics
Standard racked packs: 96 tips/rack × 10 racks/box × 10 boxes/case = 9,600 tips/case for 200 µL format. Bulk bags: 500 or 1,000 tips/bag; cases of 10 bags = 5,000–10,000 tips at significantly lower cost per tip.

Specifications Context

Racked tips from Globe Scientific, Nest Scientific, and Sorenson Bioscience are manufactured from USP Class VI virgin polypropylene in Class 100,000 cleanroom conditions. Sterile racked tips are EO-sterilised or gamma-irradiated to SAL 10⁻³ to 10⁻⁶ depending on specification. Bulk tips are moulded from the same virgin PP feedstock and are suitable for autoclaving at 121°C/250°F, 15 psi, 15 minutes maximum. Globe Scientific and Nest Scientific racks and bulk formats are among the most widely distributed in North American research labs. 

Don't leave your precision to chance. Browse our bulk and racked inventory and contact the MBP team for a custom quote today.