Filter Sets for EP11

Basis sets for checking the spectrophotometer according to Ph. Eur. (EP 11)

Article-No.: 667EP1001

for wavelength range: 240 - 640 nm and absorbance range: 0.25 - 1.0 Abs

Application	Content	Certified wavelength in nm
Checking the photometric accuracy in UV-range	UV506, 6 mg/l Niacin in HCl, (0.25 Abs) UV512, 12 mg/l Niacin in HCl, (0.5 Abs) UV524, 24 mg/l Niacin in HCl, (1.0 Abs) UV599, Hydrochloric acid (HCl, reference filter)	213, 261
Checking the photometric accuracy in the Vis-range	F2, Neutral Density Glass filter with 0.25 Abs F3, Neutral Density Glass filter with 0.5 Abs F4, Neutral Density Glass filter with 1.0 Abs	440, 465, 546.1, 590, 635
Checking the wavelength accuracy	UV5, Holmium oxide in HClO4 UV14, Perchloric acid (HCl, reference filter)	241, 287, 361, 451, 485, 536, 640
Checking stray light	UV11, Sodium Nitrite in H₂O UV12, Pure water (H₂O, reference filter) Absorbance ≥ 3.0 Abs at 340 nm and 370 nm	Cut-off: 388
Checking the spectral resolution	UV6, Toluene in Hexane UV9, Hexane (reference filter)	Scan: 265 - 270 Slit widths: 0.5, 1.0, 1.5, 2.0, 3.0

Article-No.: 667EP1002

for wavelength range: 240 - 400 nm and absorbance range: 0.25 - 1.0 Abs

Application	Content	Certified wavelength in nm
Checking the photometric accuracy in UV-range	UV506, 6 mg/l Niacin in HCl, (0.25 Abs) UV512, 12 mg/l Niacin in HCl, (0.5 Abs) UV524, 24 mg/l Niacin in HCl, (1.0 Abs) UV599, Hydrochloric acid (HCl, reference filter)	213, 261
Checking the wavelength accuracy	UV5, Holmium oxide in HClO₄ UV14, Perchloric acid (HClO₄, reference filter)	241, 287, 361, 451, 485, 536, 640
Checking stray light	UV23, Potassium Iodide in H₂O UV12, Pure water (H₂O, reference filter) Absorbance ≥ 3.0 Abs at 250 nm	Cut-off: 259
Checking the spectral resolution	UV6, Toluene in Hexane UV9, Hexane (reference filter)	Scan: 265 - 270 Slit widths: 0.5, 1.0, 1.5, 2.0, 3.0

Optical Reference Materials (Brochure & User Manual EN)

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