Agilent offers two series of molecular sieve PLOT columns in 0.53- and 0.32-mm i.d. dimensions. For applications requiring resolution of argon and oxygen without expensive cryogenic cooling, select thick-film HP-PLOT MoleSieve/5A columns. The economical thin-film columns are ideal for many applications, including routine air monitoring and analysis in less than 10 seconds. The thin-film column resolves argon and oxygen at subambient temperatures.