Designed for multiple arsenic determinations using a colorimetric assay as described in the 22nd Edition of Standard Methods for the Examination of Water and Wastewater, Method 3500-As B. KIMBLE® Chase arsine generators conform to ASTM, USP, and EPA specifications.
The lead acetate-impregnated glass wool is inserted above the Standard Taper 24/40 joint. A sample containing arsenic is placed within the flask and converted to arsine gas. Hydrogen sulfide is removed from the sample as the gas is generated by lead acetate-impregnated glass wool packed within the scrubber cavity. The absorber tube, containing the reagent silver diethyldithiocarbamate, absorbs the arsine gas and forms a red complex. This product is transferred to a cuvette, and its visible spectrum is then recorded on a colorimeter or spectrometer.
Glass beads may be added to the absorber tube to enhance the mixing of the generated gas through the silver diethyldithiocarbamate
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type 1 and ASTM E438, Type 1, Class A requirements
