Liquid Filter - 40mg Potassium Dichromate in HClO4 - 667-UV40 (Hellma Analytics)
Product Code: HELL667040
667-UV40 calibration standard for testing photometric accuracy
40mg potassium dichromate in HCIO4 (0.5.Abs)
Wavelengths: 235, 257, 313, 350nm
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