The standard NEPS 1000 and NEPS 1900 Rack Mount models require nitrogen or other dry air source. The NEPS 1000 Pumped
has a bed of molecular sieve desiccant that dries the incoming air prior to sending it into your enclosure, and does not require a dry air source. This is particularly useful in field use where it might be cumbersome to have a bottle of high pressure nitrogen on hand. However, periodically, the molecular sieve desiccant will need to be replaced. AGM carries a full line of desiccant products and can supply replacement desiccant for NEPS units.