美国Nasco  www.enasco.com
美国Nasco Whirl－Pak是家专业从事无菌取样的研发销售公司，到目前已经有30年的历史了。主要产品有无菌取样袋，无菌取样勺，无菌均质袋。同时有可标记的无菌取样袋，无菌取样勺，无菌均质袋。还有的含有硫代硫酸钠的无菌取样袋，无菌取样勺，无菌均质袋。有的样品袋可以站立。甚至还有达5700ml的取样袋。
Nasco was started in 1941 by a vocational agriculture teacher. He developed several teaching aids to use in his vocational agriculture classes…teaching aids that were not readily available from any other source. This simple act of filling a classroom need with an appropriate product was to become a way of life for Nasco in years to come.
Located in Fort Atkinson, Wisconsin, Nasco is comprised of a central office, warehouse facilities, production facility (biologicals and educational kits), and plastics manufacturing plant.
 
Market expansion led to the establishment 
of a mail-order division in Modesto, California. Nasco’s 20 different catalogs offer over 65,000 unique products to meet the needs of teachers in 14 different educational subject areas, farmers and ranchers, and industry. In addition to serving customers in all 50 states, Nasco’s unique blend of products for education, health care, agriculture, and industry appeals to customers in over 100 countries. Our mission is to provide customers with the best in quality, personal service, and affordably priced products. Nasco’s mail-order catalogs offer a convenient, inexpensive way for individuals in education, health care, agriculture, and industry to shop for the items they need.
Nasco’s “sales force” is comprised of 20 mail-order catalogs. Each year, we mail over 5 million Nasco catalogs to our valued customers worldwide! 

With our two divisions, we have a combined staff of over 540 people working year-round to serve you. Our phone center operators and customer service representatives are proud to provide you with friendly service. The goal of our warehouse and shipping departments is prompt, accurate shipping worldwide. Customer satisf/action is guaranteed, or your money back!