When you're shopping for hardware consumables for a Thermo Fisher mass spec or UHPLC system, the decision often comes down to a single replacement part versus a broader assortment. Here, the two options are separated by a $204.99 gap: one is a single consumable, and the other is an assortment. The right call depends on whether you need a precise fix today or a stockpile for ongoing maintenance.
Quick verdict
If you operate a Thermo TSQ Quantum Access Max and need the exact ion transfer tube that keeps the API source working, choose the NEW Thermo Fisher 70111-20972 Ion Transfer Tube 500-Micron Capillary. It is a sealed, new Thermo Scientific part with a part number you can match to your instrument. If you maintain a Vanquish UHPLC system and prefer having a range of spare consumables on hand, the THERMO FISCHER UHPLC SYSTEM VANQUISH CONSUMABLES HARDWARE ASSORTED LOT is the broader buy-though it carries a higher price and an open-box condition.
At a glance
| Product | Price | Relative cost | Condition | Best for |
|---|---|---|---|---|
| NEW Thermo Fisher 70111-20972 Ion Transfer Tube 500-Micron Capillary TSQ Quantum | USD 495.00 | New, sealed | Direct replacement for a TSQ Quantum Access Max | |
| THERMO FISCHER UHPLC SYSTEM VANQUISH CONSUMABLES HARDWARE ASSORTED LOT | USD 699.99 | New - Open box | Keeping a range of Vanquish UHPLC spares |
Both products come from the Thermo Fisher family, but they solve different problems. The capillary is a single, precision consumable with a specific part number (70111-20972). The lot is a mixed batch of Vanquish UHPLC hardware, listed as New - Open box and described as excess inventory from a local company. That means the capillary is ideal when you already know the exact part you need; the lot is better when you want a variety of parts to sort through.
Where each product wins
- The ion transfer tube wins when you have a specific TSQ Quantum Access Max and need a sealed, genuine Thermo Fisher capillary at a lower price. It is a defined, single-component purchase.
- The Vanquish consumables lot wins when you want a variety of parts in one purchase and can work with an open-box assortment. You get more physical items for the higher price.
NEW Thermo Fisher 70111-20972 Ion Transfer Tube 500-Micron Capillary TSQ Quantum
For labs running a Thermo TSQ Quantum Access Max, this is the exact ion transfer tube you'd order by part number 70111-20972. It's a new, sealed genuine Thermo Fisher component, priced at $495. The capillary bridges the atmosphere-to-vacuum gap in the API source, so it's a critical piece of the system. Choose it when you have a specific mass spec that needs that precise part and you want a direct replacement. The limitation is that it's a single part, not a general-purpose assortment; if your instrument is a different model or you need a range of consumables, this won't cover those needs.
THERMO FISCHER UHPLC SYSTEM VANQUISH CONSUMABLES HARDWARE ASSORTED LOT
This $699.99 lot takes the opposite approach: instead of one defined consumable, you get an assortment of Thermo Fisher Vanquish UHPLC consumables and hardware from excess inventory. It's listed as New - Open box, so you're getting a batch of parts rather than a single sealed item. The appeal is breadth-if you maintain a Vanquish UHPLC system and want spares on hand for different connections, fittings, or components, this gives you variety in one purchase. The trade-off is that it's an assortment, not a cataloged set; you'll need to review the listed contents and match them against your system's needs. It also costs $204.99 more than the single capillary.
Final choice by use case
Choose the ion transfer tube for a direct, pinpoint replacement for a TSQ Quantum Access Max when you want a sealed new component. Choose the Vanquish consumables lot for a broader hardware stash as long as you're comfortable with an open-box, assorted set. If you need a known part and want to keep the spend minimal, the capillary is the safer route. If you have a Vanquish UHPLC system and are willing to sort through a mixed lot, the assortment offers more material for the money.
