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对于需要避光保存的样品，我们专门设计色素树脂涂层，而不是简单添加染料。

聚乙烯薄膜由色素树脂涂层，而不是印刷层。这样就可以?；ざ怨饷舾械难凡皇芩鸷ΑＫ抢硐氲囊┢?，调味料，口味，食品添加剂，维生素，海洋生物，和许多其他液体或固体产品的取样装置。由美国FDA批准用于食品接触。

能更好的保持样品的真实性，避免受到色素污染。

适合于各种样品采样，密封性*，能折叠三次。zui高使用温度达82°C,可以在任何低温下使用，甚至是液氮环境。

所有产品都经过严格的灭菌处理，请放心使用。

When it is necessary to protect a sample from light, the Whirl-Pak® black bag is specially designed for this application. The polyethylene film is made from pigmented resins so the black color is an integral part of the bag and not a printed layer. The result is an opaque bag providing maximum protection for samples that are sensitive to light. It is ideal for pharmaceuticals, seasonings, flavors, food supplements, vitamins, marine life, and many other liquid or solid products. It is FDA approved for food contact.

The white, write-on strip makes sample identification easier and more convenient. It’s easy to write on this white strip using an ordinary ballpoint pen, pencil, or felt-tip marker. The paper-like finish virtually eliminates ink smearing, and provides a surface that will accept a variety of writing instruments.

Capacity is measured in fluid ounces when the bag is closed and tab is folded over three times. Volume and dimensions are approximate; bags should not be used at temperatures above 180° F （82° C）. Bags can be frozen to any temperature, even liquid nitrogen – careful handling required after freezing. All bags are sterilized after manufacturing.