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What wavelength for testing Bonderite T-5900

Q. Looking to find the wavelength setting for testing Bonderite T-5900 [Alodine 5900]?

Glen Attridge
- Ontario Canada
May 27, 2025

Spectrophotometer (visible)
spectrophotometer_visible

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MacDermid specifies Hach Method 8024, The Hach datasheet lists 540 nm if you use the spectrophotometer method or 560 nm if you use the colorimetric method.

Jon Barrows, MSF, EHSSC
Independence MO

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