Hellma

Hellma Hellma calibration standard set UV003 for checking wavelength accuracy (241 - 640 nm) and photometric accuracy (235 - 430 nm), as well as stray

Name: Hellma Hellma calibration standard set UV003 for checking wavelength accuracy (241 - 640 nm) and photometric accuracy (235 - 430 nm), as well as stray
Brand: Hellma

Hellma® calibration standard set UV003 for checking the photometer: Checking the wavelength accuracy with UV5 holmium oxide liquid filter, calibrated at wavelengths 241, 287, 361, 451, 485, 536, 640 nm, slit width 1 nm, measured against UV14 perchloric acid (blank). Checking the photometric accuracy with UV60 potassium dichromate 60 mg/l, calibrated at wavelengths 235, 257, 313, 350 nm, slit width 2 nm; UV600 potassium dichromate 600 mg/l, calibrated at wavelength 430 nm, slit width 2 nm; both filters measured against UV14 perchloric acid (blank). Checking stray light with UV1 potassium chloride calibrated at 198 nm (cut-off approx. 200 nm), slit width 2 nm, measured against UV12 ultrapure water (blank). Checking the spectral resolution with UV6 toluene in hexane and UV9 hexane reference filter (blank), calibrated at wavelengths 265 - 270 nm, slit widths 0.5, 1.0, 1.5, 2.0, 3.0 nm. All filters with serial number, packed in high-quality storage boxMostrar mais

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