The phrase "sample order" refers to requesting a small quantity of a product or item in order to test or evaluate it before buying in larger quantities. Full definition
20 % coupon code with sample order a huge bonus! (basicinvite.com)
You'll perform point of care testing, administer vaccines and injections, obtain ECG / EKGs, and perform phlebotomy to obtain lab samples ordered by providers. (ziprecruiter.com)
In the right - hand corner, the artists show a series of free samples ordered online — 16 mm aluminum Venetian blinds, a 3D carbon fiber vinyl sticker, and stainless steel mosaic tiles among them — all gold in color, and each displayed like an entomologist's most prized butterfly (price: $ 2,500 apiece). (artsy.net)