Description
Spearlab FD-130 Cryogenic Foam Dewar (130 ml) – Mini : Small, hexagonal outside, hand held foam dewar, maximum volume 175 ml. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 2 inches in diameter by 3.5 inches deep, so that it easily holds 130 ml and a maximum volume of 175 ml of liquid nitrogen. The HR4-676 has an overall height of approximately 4.5 inches without cover and the width is 3.5 inches at the top and 3.75 inches on the bottom (measured on the flats of the hexagon). Circular cover is approximately 0.5 inches tall x 3.5 inches diameter.

Spearlab Cryogenic Foam Dewar (500 ml) – Small: The small foam dewar shape is circular, with a protruding handle, so that it resembles a large teardrop. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 4.5 inches in diameter by 2.8 inches deep, so that it easily holds 500 ml of liquid nitrogen.

Spearlab FD-800 Cryogenic Foam Dewar (800 ml) – Standard: The standard foam dewar shape is circular, with a protruding handle, so that it resembles a large teardrop. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 5.8 inches in diameter by 2.8 inches deep, so that it easily holds 800 ml of liquid nitrogen.

Spearlab FD-1400 Cryogenic Foam Dewar (1400 ml) – Large: The large foam dewar shape is circular, with a protruding handle, so that it resembles a large teardrop. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 6.3 inches in diameter by 3.8 inches deep, so that it easily holds 1400 ml of liquid nitrogen. Overall height is approximately 6 inches without cover and the width is 9 inches on the short axis and 11 inches on the long axis. Cover approximately 0.5 inches tall x 9 inches diameter.

Spearlab FD-1800 Cryogenic Foam Dewar (1800 ml) – Tall: The tall foam dewar shape is a tapered octagon on the outside with a cylindrical interior. The tapered octagon features a wide, stable base. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 3.5 inches in diameter by 12.5 inches deep, so that it holds approximately 1,800 ml of liquid nitrogen. The outside dimensions of the tall dewar are 15.25 inches tall with a 6.25 inches wide top and a 7.75 inches wide base (measured on the flats of the octagon). The cover is 6.5 inches in diameter and 0.5 inches thick.

The patented (USPTO # 7,971,744) design of the Spearlab Cryogenic Foam Dewar makes it easy to handle and safer to use than a traditional low profile glass dewar. Also, because of its lower thermal mass, a foam vessel will cause less boil off when it is filled with liquid nitrogen. Additionally, the dewar will accumulate less frost during regular use. The end result is that less liquid nitrogen is consumed.

The dewars are made from cross-linked polyethylene foam. A density of 4 pounds per cubic foot is used for the 130 ml and 800 ml dewars. A density of 2 pounds per foot is used for the 1400 ml and 2 liter dewars. The higher density foam has significantly higher mechanical strength and stiffness. The lower density foam has slightly lower thermal conductivity. Like most lightweight insulation materials, the thermal conductivity of the foam is predominantly determined by the thermal conductivity of air, which eventually permeates the pores of the foam material.

应用

• 冰晶术

特征

• 每个杜瓦都有一个盖子
• 专有泡沫建筑(USPTO#7,971,744)
• 迷你(130毫升)，小(500毫升)，标准(800毫升)，大(1400毫升)和高(1800毫升)
• 杜瓦唇上的还原冰形成
• 易干
• 泡沫结构减少滑移

描述

Spearlab FD-130低温泡沫杜瓦(130毫升)-迷你：小的，六角形的外面，手持泡沫杜瓦，最大体积175毫升。每个杜瓦提供一个匹配的泡沫盖子，以使内容物与周围空气隔离。该容器内圆柱形空腔的尺寸为直径2英寸，深3.5英寸，便于容纳130毫升和最大容量175毫升的液氮。HR4-676的总高度约4.5英寸，没有盖子，宽度在顶部为3.5英寸，底部为3.75英寸(在六边形的平面上测量)。圆形盖子大约0.5英寸高x 3.5英寸直径。

Cleaning Spearlab foam dewars  清洁 Spearlab 泡沫杜瓦瓶
Our open liquid nitrogen containers are made from a cross linked polyethylene foam, a material that is compatible with a wide variety of solvents. Liquid nitrogen can be poured directly into the foam cavity, with less boiloff than with conventional metal or glass Dewars.
A convenient way of cleaning the surfaces of the foam dewar is to use a spray bottle with isopropyl alcohol, which can be purchased inexpensively at most pharmacies and supermarketsin the United States:

After spraying with alcohol, wipe the surface with a cotton cloth or paper tissue. The cleaned vessel now is ready to use.
Washing with warm or cold water, using a detergent or soap, is another cleaning method.
We recommend drying the dewar in air, on a rack. For faster results, you can use a hair dryer on the“cool” or “low” heat setting. Do NOT use an industrial heater, as such devices create high surface temperatures, which may melt or burm the foam material.
Our products are made to provide many years of safe use in your laboratory.

我们的开放式液氮容器由交联聚乙烯泡沫制成，这种材料与多种溶剂兼容。液氮可以直接倒入泡沫腔中，与传统的金属或玻璃杜瓦瓶相比，蒸发量更少。
清洁泡沫杜瓦瓶表面的一种便捷方法是使用装有异丙醇的喷雾瓶，在美国的大多数药店和超市都可以廉价购买：

喷洒酒精后，用棉布或纸巾擦拭表面。清洁后的容器现在可以使用了。
用温水或冷水、洗涤剂或肥皂清洗是另一种清洁方法。
我们建议在架子上在空气中干燥杜瓦瓶。为获得更快的结果，您可以在“冷”或“低”热设置下使用吹风机。请勿使用工业加热器，因为此类设备会产生高表面温度，这可能会熔化或烧毁泡沫材料。
我们的产品旨在为您的实验室提供多年的安全使用。

图片仅供参考,请以实物为准。
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