moorfurlong
New member
HI
Has any one been in these recently ?
Thanks
Has any one been in these recently ?
Thanks
EwanCameron said:Ask the OCC lads that dig in there [WICC]
al said:remember the "normal" reading for CO2 in fresh air is 0.08%.
royfellows said:al said:remember the "normal" reading for CO2 in fresh air is 0.08%.
Its about 402 ppm or 0.04% by volume or about 0.06% by mass, scientific fact.
Typo?
royfellows said:I know my friends in SCMC have them, and I think that they calibrate them against the known fresh air setting or something before going underground. I am vague on this though.