HoDi liquid filter

HoDi liquid filter (240 - 870 nm)

for checking the wavelength accuracy

The HoDi liquid filter consists of a solution of holmium oxide and didymium (praseodymium and neodymium) in perchloric acid. This filter features an especially broad wavelength spectrum and is therefore ideally suited to checking the wavelength accuracy of spectrophotometers in the UV and visible range.

It has a broad spectrum with a variety of characteristic, very well-defined peaks in the range between 240 nm and 870 nm. Depending on the performance of the spectrophotometers used, up to 22 peaks can be detected at a slit width of 1 nm.

Typical spectrum of a HoDi filter, measured at a slit width of 1 nm.

ARTICLE-NO.	667045 Request this article
APPLICATION	Checking the wavelength accuracy in the UV and Vis range
CONTENT	Holmium Oxide and Didymium in Perchloric Acid
STANDARD MEASUREMENT	Wavelengths: 241, 354, 444, 575, 641, 740, 864 nm Slit width: 1 nm; with DAkkS calibration certificate
POSSIBLE MEASUREMENTS	Wavelengths: 241, 278, 287, 333, 347, 354, 361, 416, 444, 451, 468, 482, 512, 522, 537, 575, 641, 732, 740, 794, 801, 864 nm Slit width: 1 nm

ARTICLE-NO.	667045EPUSP Request this article
APPLICATION	Checking the wavelength accuracy in the UV and Vis range according Ph. Eur. and USP 857
CONTENT	Holmium Oxide and Didymium in Perchloric Acid
STANDARD MEASUREMENT	Wavelengths: 241, 287, 361, 451, 482, 512, 537, 641, 732, 740, 794, 801, 864 nm Slit width: 1 nm; with DAkkS calibration certificate

HoDi Filter (Data Sheet EN)

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Reference Materials (Brochure & User Manual EN)

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Contact/Inquiry

Hellma USA Inc.
120 Terminal Drive
11803 Plainview, NY
United States

Phone: +1 5169 3908 88
info.us@hellma.com
www.hellmausa.com

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