For arsine analysis using the diethyldithicarbarbamate (SDDC) colorimetric method. Design also meets specifications of ACS/USP, EPA and can be used with APHA Standard 104A. Complete item consists of a 125 ml Erlenmeyer flask and scrubber tube both having 24/40 standard taper joints. A ball and socket joint connection on the scrubber tube extension improves mechanical design. Supplied with one size 24 polyacetal clamp, but the #12 Ball & Socket clamp is sold separately. Glass beads may be added to the absorber tube to enhance the gas mixing.