Air Sampling Technician View cart “Allied Trades – Refresher” has been added to your cart. $120.00 Air Sampling Technician quantity Add to cart Category: Uncategorized Related products Project Monitor – Refresher $170.00 Add to cart Project Designer – Refresher $200.00 Add to cart Air Sampling Tech – Initial $300.00 Add to cart Operations & Maintenance -Refresher $120.00 Add to cart