3 mg o  4 si o 2  h 2 o or h 2 mg 3 o 12 si 4
si o 2 along with fe 2 o 3 and ti o 2 impurities
repeating galactose units with different levels of sulfation
c 6 h 2 ( n o 2 ) 3 c h 3 or c 7 h 5 n 3 o 6

cosmic ray filter, baseline correction, cut at 300 1/cm

epdm rubber (ethylene propylene diene monomer rubber)

nylon 6,6 - poly(hexamethylene adipamide)
nylon 6,9 - poly(hexamethylene azelamide)
nylon 6,12 - poly(hexamethylene dodecanediamide)

polydiglycidyl ethers (polyepoxides, polyhydroxyethers, phenoxy)
polyethers (polyglycols, oxyalkylenes, glycidyl ethers & cyclic ethers)