Het Proefstation is an independent wine wholesaler specializing in the import and distribution of wines and beverages to the hospitality industry and other businesses. Based in Haarlem, the company collaborates with reputable suppliers, wineries, and producers from both domestic and international markets. Notably, Het Proefstation prides itself on its flexibility, allowing them to source wines that align with the unique needs of their partners' menus and price points without being tied to any single supplier.

Their extensive product range includes a variety of wines—such as red, white, rosé, sparkling, and dessert wines—as well as alcohol-free alternatives like Prisecco and Manufaktur Joerg Geiger's alcohol-free wine and cider. Additionally, they offer cider, kombucha, and gourmet vinegars. While primarily focused on serving the better hospitality sector, Het Proefstation also caters to individual customers through their online webshop. By subscribing to their newsletter, customers can stay updated on new products and special offers.