Specifications include, but are not limited to: 1 HYDROCARBON FREE AIR A 2 ULTRA ZERO AIR AL 3 CO (5-10 ppm) CL 4 CO (20-50 ppm) CL 5 CO (50-200 ppm) CL 6 NO (5-15 ppm) CL 7 SO2 (5-15 ppm) CL 8 NO2 (10-50ppm) CL 9 HE - 99.999% 10 ARGON 99.999% 11 PROPANE & TOLUENE (10 ppm) BL 12 PROPANE & TOLUENE (50ppm) BL 13 SO2 (100 PPM) BL 14 SO2 (500 PPM) BL 15 NO (100-500 PPM) BL 16 NO (500 PPM) BL 17 CO + C3H8 (4% 1600 ppm) BL 18 CO + C3H8 (1.6% 440 ppm) BL 19 CO, C3H8 & CO2 (1.6% 600 ppm) AL 20 CO, C3H8 & CO2 (1.0% 300 ppm) AL 21 CO, C3H8 & CO2 (4.0% 1200 ppm) AL 22 HE - 99.999% A 23 H2 (77 C.F.) B 24 H2 (196 C.F.) A 25 N2 A 26 ACETYLENE (COMMERCIAL) A 27 ACETYLENE (PURIFIED) A 28 AIR A 29 ARGON GAS A 30 ARGON LIQUID (DEWAR) 31 ARGON/METHANE P5 B 32 ARGON/METHANE ULTRA P5 B 33 ARGON/METHANE P10 B 34 HELIUM - 99.9995% A 35 HYDROGEN - 99.997%