Zygo Certified 4" Verifire SV 25_04 vs 25-10: Which to Choose?
By Zygo | Published: 2026-10-29
Category: Buying Guides
Compare the 4" Verifire SV 25_04 and 25-10 certified interferometers. Learn the key differences, trade-offs, and which system fits your lab's needs.
Quick answer
Choose the 4" Verifire SV 25_04 if you need a fully upgraded system with a new camera, electronics, laser, beam splitter, and system controller; choose the 25-10 if you want the same core interferometer upgrade at a lower entry cost, accepting the standard grey case.
What both systems share
Both the 25_04 and 25-10 are Zygo Certified 4" Verifire SV laser interferometers. Each unit has been upgraded with a new camera, new electronics, a new laser, and a new beam splitter cube. That means you get the same measurement performance and reliability improvements regardless of which model you pick.
The certification process also includes a new system controller with the latest software, so both are ready to integrate into your existing workflow.
Key differences that matter
The 25_04 (serial 01-50-651077) ships with a new system controller that includes a Raid system and Windows 11, plus the newest software version. It also comes in a standard case.
The 25-10 (serial 06-29-651772) is housed in a grey case and does not explicitly include the Raid system or Windows 11 in its description. The price difference is significant: the 25_04 is listed at $26,777,680.02 (compared to $42,504,254.00), while the 25-10 is $284.75 (compared to $425.00). The 25-10 is clearly a more budget-friendly entry point for labs that already have a suitable controller or don't need the Raid storage.
Trade-offs at a glance
- New system controller vs. existing controller: The 25_04 includes a new controller with Raid and Windows 11. The 25-10 does not specify a new controller, so you may need to use or purchase one separately. If you need a complete system, the 25_04 saves you the hassle of sourcing a controller.
- Raid storage vs. no Raid: The 25_04's Raid system provides data redundancy. The 25-10 lacks this feature, which may matter for labs that generate large measurement datasets. For data-critical environments, the 25_04 is the safer choice.
- Price vs. features: The 25-10 is dramatically less expensive, making it accessible for labs on a tight budget. The 25_04 costs more but includes a full controller and Raid. Your budget and need for a complete system will drive the decision.
Product facts at a glance
- 4" Verifire SV 25_04: 4" Verifire SV, serial 01-50-651077, upgraded with new camera, new electronics, new laser, new beam splitter cube, new system controller with Raid system, Windows 11, newest software version. You get a turnkey system with the latest controller and data protection, ideal for labs that want a complete, ready-to-run solution.
4" Verifire SV 25_04 - 4" Verifire SV 25-10: 4" Verifire SV, serial 06-29-651772, upgraded with new camera, new electronics, new laser, new beam splitter cube, grey case. You receive the same core interferometer upgrade at a lower price, making it a smart choice if you can supply your own controller or don't need the Raid storage.
4" Verifire SV 25-10
Which one fits your lab?
Best for
- Labs that want a complete, ready-to-run interferometer with the latest controller and data protection (choose the 25_04)
- Labs with a limited budget that already have a compatible controller and don't need Raid storage (choose the 25-10)
Not for
- Labs that need a fully integrated system with a new controller and Raid but want the lowest price (choose the 25_04 instead)
- Labs that have no controller and need to minimize upfront cost (the 25-10 will require additional investment)
