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  5. Gibco™ Lab Armor™ Beads

Gibco™ Lab Armor™ Beads
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Catalog No. A1254301
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Volume: 4 L
Volume: 8 L
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A1254301 Volume: 4 L
A1254302 Volume: 8 L
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Catalog No. A1254301 Supplier Gibco™ Supplier No. A1254301
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Description

Small, non-uniform metal beads comprised of dry, metallic thermal alloy for use in water baths designed to replace water in a water bath or ice in an ice bucket.

  • Maintains uniform temperature better than water by transferring heat more slowly
  • Can remain "always-on" and ready to use
  • Bottles and tubes stay in place without need for racks, weights and floats
  • Removes need for water bath maintenance such as emptying, cleaning and refilling bath
  • Eliminates risk of contamination from standing water in water bath
  • No condensation seen around caps and incubating bottles removed from dry bath
  • Environmentally responsible alternative to water
  • More energy efficient than water
  • Draws less energy when run at 37 and 65°C
  • Made from recyclable material that can be cleaned with ethanol, eliminating need for water bath germicides that can harm the environment
  • Store at 15 to 30°C (shipped under ambient conditions)

Specifications

Bead Type Reflective, Inert, Smooth
Content And Storage Storage conditions: 15 – 30°C
Shipping conditions: Ambient
Capacity (Metric) 4 L
Temperature Range -80°C to +180°C
Type Bead
Product Line Gibco
Quantity Volume: 4 L
Shipping Condition Room Temperature
Diameter (Metric) 5 mm poly-disperse

Frequently Asked Questions (FAQs)

Can I use Lab Armor Beads for an ice bath?

There are number of different ways to use Lab Armor Beads. Many customers place containers of beads in their refrigerators, incubators, and ovens. When creating an ice bath, one goal is to keep the beads dry. It is a good idea to separate the beads from the ice packs, which accumulate condensation. It is important to keep the beads from soaking in water for extended periods of time. Besides attracting contamination, excessive water contact will tarnish the surface of the beads and reduce the fluidity of the bath. Also, as an alternative to ice packs, dry ice can be used to make a colder bath (<0 degrees C).
How do I keep my Lab Armor Beads shiny and fluid?

Normal amounts of precipitation on refrigerated bottles and vials are not harmful. However, exposure to a combination of heat and water or reactive chemicals can oxidize the surface of the Lab Armor Beads. Chemically accelerated oxidation reduces the shine of Lab Armor Beads and more importantly, the fluidity of the beads. In general, Lab Armor Beads can last for many years if kept relatively dry and clean. They can even out-live your water bath.
Is an air-jacketed water bath compatible with Lab Armor Beads?

In general, air-jacketed water baths provide better overall heat distribution and temperature gradients. The air jacket that surrounds the tub portion of the bath allows the heated air generated by the heat element at the base of the tub to also warm the walls of the tub. Baths with heated walls transfer heat to the beads from 4 directions. Baths without air jackets less efficiently heat the beads from the bottom only.

Be aware that when the bath's heating element is not recessed below the tub, but is instead fixed to the tub by metal-to-metal contact, the base of the bath can become very hot in areas where contact is made. This produces hot spots at the bottom, which results in uneven gradients in the bath. Heating elements that only cover a small portion of the base of the tub can make this problem worse. Such baths produce hot spots, whether water or beads are used.
Besides keeping the water bath cleaner, how do Lab Armor Beads protect samples better than water?

Lab Armor Beads eliminate the possibility of water wicking into the sample and prevent cross-contamination from water dripping off a vessel onto other items on the bench when removing the vessel from the bath. If the bath is accidentally turned off or loses power, Lab Armor Beads maintain temperature up to 5 times longer than water, offering better protection for incubating samples.
How do Lab Armor Beads perform under high or low temperatures?

Lab Armor Beads have been tested using various water bath models at a range of temperatures. In most baths, the further the set temperature is from ambient temperature, the greater the thermal gradient is farthest away from the heating element. Therefore, at an operating temperature of 37 degrees C to 42 degrees C, the thermal gradient in a water bath is typically +/- 1-3 degrees C, whereas at 55-65 degrees C it is closer to +/- 3-8 degrees C depending on the design of the bath and the amount of Lab Armor Beads used. To reduce the temperature gradient, use less Lab Armor Beads. For example, in a bath set at 65 degrees C, the temperature gradient can be reduced by 2 to 3 fold by using a 3-inch depth of Lab Armor Beads instead of 6-inch depth. For the most part, high temperature applications use microfuge tubes and other small vessels, so reducing the overall volume of Lab Armor Beads is very practical.
How can I tell if my water bath is compatible with Lab Armor Beads?

Lab Armor Beads can be used with just about any water bath. Like water, the performance of the beads is affected by the design of the bath and the location of the heating element. With water, for example, "hot spots" occur in areas of proximity to the heating element. Some heating elements are exposed on the bottom of the bath and others are recessed. Some baths are deep and others are shallow. In a bath with the heating element located in the center, water and Lab Armor Beads generally produce a temperature gradient of +/- 0.25 -0.75 degrees C per inch in all directions from the middle of the bath. So, depending on the size and location of the heating element, as well as the dimensions of your bath, you can gauge the performance of Lab Armor Beads in your bath. However, circulating water baths are incompatible with beads.
Do temperature gradients exist in a water bath? How do Lab armor Beads help with minimizing exposure to temperature gradients?

Yes, all water baths have hot spots and temperature gradients. The extent of the gradient depends on the design of the water bath. In some baths, for instance, the heating element is small or is not centrally located. In others, the heating element spans the entire surface of the bath providing a more uniform heating capacity. The temperature gradient is very similar between water and beads, usually +/- 2.5 degrees C. However, a sample vessel can be completely submerged in Lab Armor Beads, eliminating exposure to surrounding air temperature.
Do I need to use the water bath cover with Lab Armor Beads?

Yes, it is best practice to use the cover whenever possible. The cover allows maximum temperature range and helps maintain better temperature uniformity. In general, without the cover in place, the surface of the Lab Armor Beads will be slightly cooler due to the movement of cooler air over the bath.
What if something is spilled into the Lab Armor Beads?

Lab Armor Beads may be washed with dish detergent and water, then sprayed with a non-oxidizing disinfectant such as ethanol if necessary. Most importantly, be sure to completely dry the Lab Armor Beads before adding them back to the water bath, because a combination of heat and water can tarnish the beads. You can use a mesh strainer to wash and dry the beads. A nylon <1/4" mesh bag works well. These mesh bags are often found at a camping supply store.

Can I autoclave Lab Armor Beads?

We recommend that you avoid autoclaving Lab Armor Beads, unless you autoclave in a sealed, moisture-proof container. The high temperature steam can oxidize the surface of the beads, thereby reducing fluidity and overall performance.

Can Lab Armor Beads be used to fill a circulating or shaking water bath?

In general, if a bath has moving parts that interface with water, you should not add Lab Armor Beads. However, if the bath can be operated effectively without the moving parts, and you can turn the parts off or remove them, then Lab Armor Beads may be used.

My water bath is designed differently than some of the more popular baths. Can I still use Lab Armor Beads?

If your bath is in good working condition, and you haven't noticed any thermal performance problems with water, then Lab Armor Beads should work for you. Do not worry if your bath has an exposed thermocouple (thermostat) or heating element. An exposed thermocouple does not affect the performance of Lab Armor Beads. An exposed heating element is only an issue if it is not centrally located. If your bath's heating element is off to one side, then you may notice a temperature gradient from one side of the bath to the other. Some baths have cover plates at the bottom. If your bath has a cover plate, please review the instructions on proper setup with Lab Armor Beads.

Can Lab Armor Beads be used to fill any constant temperature water bath?

Lab Armor Beads are fully compatible with nearly all non-circulating, non-shallow, standard depth (>5" deep) water baths.

How long can I use Lab Armor Beads under normal conditions?

Under normal conditions, Lab Armor Beads should last the life of the water bath. If used incorrectly, the surfaces of Lab Armor Beads can become damaged, resulting in a loss of fluidity of the bath, but not in thermal performance. We recommend that you avoid strong detergents, acids and bases. Bleach, for instance, may tarnish the surface of the Lab Armor Beads reducing its fluidity and overall performance

How much Lab Armor Beads do I need to add to my water bath?

Unlike water, Lab Armor Beads don't evaporate and therefore help protect against instrument overheating and burnout. But, like water, it is important to add a sufficient volume to your bath to help ensure safe operation. An insufficient volume can cause inaccurate thermostat readings, which can result in continuous heating of the bath. Most water baths operate properly when filled to 1/2 to 3/4 full.

Are Lab Armor Beads packaged as ready-for-use?

Yes, Lab Armor Beads arrive in a sealed container ready to add to your thermal instrument.

For Research Use Only. Not for use in diagnostic procedures.