When you're buying hardware consumables, the first decision isn't which part is cheaper-it's which part your instrument actually takes. One pick here is a sealed Thermo Scientific capillary for a specific triple quadrupole mass spectrometer; the other is a Shimadzu hardware consumables kit in an open box. That difference matters more than the roughly $415 gap between them.
Quick verdict
Choose the Thermo Fisher 70111-20972 if you own a Thermo TSQ Quantum Access Max and need the 500-micron ion transfer tube. Choose the Shimadzu 228-43969-91 if you need a Shimadzu hardware consumables kit and want the lower-priced of the two. If the instrument in front of you is a TSQ Quantum Access Max, the fit argument wins; if you just need a Shimadzu kit and the open-box condition is acceptable, the lower price wins.
At a glance
| Product | Price | Condition | Origin | What it is |
|---|---|---|---|---|
| Thermo Fisher 70111-20972 Ion Transfer Tube | $495.00 | New | United States | 500-micron capillary for the Thermo TSQ Quantum Access Max mass spectrometer |
| Shimadzu 228-43969-91 Hardware Consumables Kit | $79.99 | New - Open box | Japan | Shimadzu hardware consumables kit, Rev. E |
What to weigh
Start with instrument fit: the Thermo Fisher capillary is made for a particular triple quadrupole, while the Shimadzu kit covers the Shimadzu side. Then consider packaging and condition: the Thermo part is New, and the Shimadzu kit is New - Open box. After those two points, the price spread does the rest of the talking.
Where each product wins
Choose the Thermo Fisher tube for exact instrument fit
If your lab runs a Thermo TSQ Quantum Access Max triple quadrupole, the 70111-20972 is the capillary designed for that system's API source. It's a genuine Thermo Scientific part in its original case, so you're getting the intended tube rather than a generic alternative. This is the pick when instrument-specific fit matters more than keeping the purchase price low.
Choose the Shimadzu kit for lower spend
If you need a Shimadzu hardware consumables kit and want to stay at the entry point of this price spread, the 228-43969-91 gives you a Shimadzu-labeled kit in its Rev. E form. It's open-box, but it's the more affordable pick here. This is the pick when you're servicing Shimadzu equipment and the listed hardware consumables match what you need to have on hand.
Product notes
Thermo Fisher 70111-20972 Ion Transfer Tube
This is the genuine Thermo Scientific part with part number 70111-20972, listed as New in the original case. The capillary bridges the atmosphere-to-vacuum gap in the API source, and its intended use is specifically the Thermo TSQ Quantum Access Max triple quadrupole mass spectrometer. That makes it a tightly specified consumable rather than a generic part. For anyone maintaining that instrument, this is the tube to have on hand. The trade-off is that it's a single component, and its fit is limited to the TSQ Quantum Access Max platform; if your lab doesn't run that system, this capillary isn't a general-purpose lab consumable.
Shimadzu 228-43969-91 Hardware Consumables Kit
The Shimadzu 228-43969-91 brings together hardware consumables in one kit, identified as Rev. E and offered by JW-iCuzATA. It's listed as New - Open box, with the unit pictured as the actual item you'll receive. If you're stocking Shimadzu hardware consumables and want the lower-priced option in this head-to-head, this kit gives you a path to a Shimadzu-labeled part at the lower end of the price spread. The limitation is the open-box condition: you're buying a kit that isn't factory-sealed, so the physical unit you get is the one shown, and you should be comfortable relying on the seller's description of the item.
Final choice by use case
- Need an ion transfer tube for a Thermo TSQ Quantum Access Max? Go with the Thermo Fisher 70111-20972.
- Need a Shimadzu hardware consumables kit and prefer to spend less? Go with the Shimadzu 228-43969-91.
