STARNA, REFERENCE MATERIALS FOR ALL YOUR SCIENTIFIC APPLICATIONS

Samarium - For UV and Visible Wavelength Description: Samarium (III) oxide in perchloric acid. Primary Usage: Assessment of wavelength scale accuracy in both UV and visible regions. Useable range: 230 nm to 560 nm, instruments with SBW of less than 5 nm. Physical Configuration: Far UV quartz cells that have been permanently heat sealed. RM-SL: (see MSDS) Consists of one sealed cell, with certified peak at spectral bandwidth values of 0.10 nm, 0.25 nm, 0.50 nm, 1.00 nm, 1.50 nm, 2.00 nm and 3.00 nm. Product Description: Samarium perchlorate is a particularly suitable reference material for checking the wavelength scale of a spectrophotometer over the most commonly used range of 200 to 500 nm, as it has peaks throughout this region. Many of the peaks are very narrow, providing very accurate location of the peak wavelengths. With a half bandwidth of as little as 5 nm, some peaks provide a very convenient way of checking instrument resolution also. Shown below is this effect observed on the peak couple at 233-235 nm. Typical values obtained: SBW nm nm nm nm nm nm nm nm nm nm nm nm nm nm 0.10 479.18 463.49 415.20 401.45 390.60 374.27 362.36 346.96 332.09 317.59 305.28 290.24 278.99 235.27 0.25 479.17 463.48 415.33 401.41 390.68 374.24 362.55 344.61 331.94 317.71 305.30 290.29 279.07 235.18 0.50 479.12 463.44 415.32 401.40 390.51 374.32 362.42 344.61 331.94 317.60 305.38 290.19 278.96 235.16 1.00 478.99 463.53 415.44 401.36 390.61 374.31 362.46 344.51 332.05 317.58 305.23 290.22 279.10 235.21 1.50 479.07 463.60 415.65 401.28 390.55 374.31 362.53 344.48 332.14 317.49 305.32 290.20 279.10 235.21 2.00 478.86 463.71 415.99 401.27 390.54 374.22 362.32 344.57 332.09 317.52 305.56 290.20 279.10 235.038 3.00 478.57 463.77 415.99 401.18 390.65 374.0 362.11 344.50 332.00 317.50 305.43 290.50 279.07 234.60 All Starna® samarium Certified Reference Materials are manufactured using procedures similar to those used in the preparation of our Holmium Oxide Reference Material (RM-HL). After filling under controlled conditions, the cells are then permanently sealed by heat fusion and the values certified by the procedure described below. Calibration procedure: Traceability: Primary instrumental wavelength calibration is established using the emission lines from mercury and deuterium sources. Additional traceability links to NIST primary materials are established using SRM 2034 holmium oxide (4% m/v) in perchloric acid (10% v/v). Use: All appropriate fundamental parameters and procedures relating to measurement, handling and storage are fully documented on the certificate supplied with each Certified Reference Material.

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