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3M Speedglas 9100XXi Auto Darkening Welding Filter

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The 3M™ Speedglas™ Auto-Darkening Welding Filter 9100XX: A New Level of Visibility and Control

The 3M™ Speedglas™ 9100 Series AutoDarkening Filters now provide a new solution. The 9100XXi Auto-Darkening Filter from Speedglas has the same broad viewing area as the 9100XX ADF. However, because of improved optics, the 9100XXi ADF allows you to distinguish colours more easily, which may help you focus on your welding setup, welding technique, precise grinding, and inspection of recently finished welds.

Please note: Helmet sold separately here.

Improved Features:

  • Enhanced filter optics for a more natural colour display
  • Dual memory modes
  • Fast switching between welding and grinding
  • Grab and go with auto-ON

12 Month Warranty - full T&C's available upon request

Key Details:

1. More Natural Colour & Contrast: This viewing screen has the same large viewing area as the 3M™ Speedglas™ 9100XX ADF, but better optics make it easier to see colours.

2. Grinding Mode: With just a quick press of the button on the silver front, the filter is locked into its shade 3 light state, ready to grind. With one more quick push, the auto-darkening mode is turned back on, and you're ready to weld again.

3. Dual Memory Modes: Gives you the freedom to quickly switch between two different filters for welding. There is a different choice for dark shade, switching sensitivity, and dark-to-light delay for each memory mode.

4. Auto On/Off: For "Grab & Go" convenience, the motion sensor turns on the filter as soon as you pick up the welding helmet.

5. Helmet Compatibility: Fits with all Speedglas 9100 helmets however external grinding and memory modes are exclusive to the 9100/9100 Air Helmets.


  • Filter Battery Life: 1800 hours
  • Lens Type: Auto-darkening
  • ADF Dark State Shades: Variable dark shade 5, 8, 9-13
  • ADF Shade Range: Variable 5, 8-13
  • Light State: Shade 3
  • Grinding State: Shade 3
  • Specifications Met: EN 166, EN 379, EN166:BT
  • Switching Time (Dark-Light): 0.1 ms
  • Switching Time (Light-Dark): 0.1 ms @ 23°C
  • Switching Time Delay: 5 levels (TIG>20A & MIG/MAG, Stick, Tack)
  • UV/IR Protection Shade: 13 (permanent)
  • Fail Safe shade: Shade 5
  • UV/IR Protection: Shade 12 protection in all states
  • Delay (dark-to-light): Adjustable from 40 to 800 ms
  • Viewing Area: 73mm x 107mm
  • Approvals: EN175:B, EN379, EN166:BT*


Q: How should I ensure my 3M™ Speedglas™ ADF 9100XXi remains in good order?

A: If you clean and check your 9100XXi Filter often, it will work better and last longer. Chemicals or harsh cleaners should not be used to clean the filter. Instead, use a soft, wet cloth. Any parts that are broken or worn out should be changed out as needed. The user guidebook tells you how to do this in more detail.


Q: Can the 9100XXi Welding Filter be used with any Speedglas welding helmet?

A: Only the 9100 Series, the 3M Speedglas 9100XXi Filter is made to work with any of the 3M Speedglas 9100 Series Helmets


Q: Is the 3M Speedglas 9100XXi a Good Upgrade for My Welding Needs?

A: Yes, the 3M Speedglas 9100XXi is a great upgrade for most welding needs. It offers advanced auto-darkening technology for clearer vision and reduced eye strain, a larger viewing area for enhanced visibility, and ergonomic design for comfort. Additionally, it features sensitivity and delay adjustments for tailored performance and is compatible with certain respiratory systems. While it is a premium, more costly option, its durability and advanced features make it a valuable investment for professional welders seeking improved performance and safety.


Technical Information
12 Month Warranty - full T&C's available upon request
Live UK Stock and Dispatched within One Business Day
Calculated at Checkout