Ethyl alcohol (Ethanol)

Box of Colorimetric Tubes.  104SA/SB = 3 year, 104U = 2 year shelf life from date of manufacture.

104SA/U are 10 tubes per box.  Each sample uses 1 tube. 10 samples total.

104SB is 2x 5 tubes per box.  Each sample uses 2 tubes. 5 samples total.