![]() ![]() How is the Bullet Blender different from other high-throughput homogenizers on the market? To do this leave the dry ice compartment lid open to enable air exchange. Gold models can be run without dry ice to achieve Air Cooling mode. The Air Cooling feature comes on all models of the Bullet Blender. The Air Cooling keeps the Bullet Blender cooler so that the first batch of samples heat up a little less and subsequent batches are kept just about as cool as the first batch. ![]() However, if you’re running a second batch of samples soon afterward, they will heat up a little more because the Bullet Blender is starting out slightly warmer. Normally, the samples in the Bullet Blender only heat up a few degrees and stay quite cool. Air Cooling is also useful if you’re running several sample cycles in a row or if your samples are extra sensitive to heating up. Air Cooling draws cool air into the instrument if you are using the Bullet Blender in a cold room or a refrigerated cabinet keeping samples below room temperature. These models exchange air with their surroundings they do not have refrigeration units. Also known as air cooling.Īll models have Air Cooling. When there is no dry ice in the compartment, you should operate the instrument with the lid of the dry ice compartment open so that the fan can draw in ambient air around your samples. What will happen if I operate my Bullet Blender Gold unit with no dry ice? It is essentially to replenish the dry ice and using the Wholly Scooper, filter out the “snow” for proper air flow. If your dry ice has been stored for a long time, it may also contain some water ice from condensed humidity in the air and will be less effective in cooling the unit. Remove the inner dry ice compartment and replace the ice. Why is my Gold instrument not cooling, or (on older Gold models) why is the 4☌ light not lighting up on my unit?įrost from condensation may be blocking the air flow. Drawing moist air into the unit may also cause damage to the electronics over time. The melt water, if spilled, could damage the Bullet Blender and void any warranty. Secondly, the melt water will block the flow of air for cooling the samples. You can use some regular ice from a -80 Freezer, however, it will not be as effective or last as long as dry ice. We recommend filling the chamber with 3 lbs of dry ice- depending on how heavily the instrument is used, this should keep samples at 4☌ for an entire day of homogenization. It takes at least 2 lbs of dry ice for the instrument to achieve maximum cooling. How much dry ice do I need to use 4☌ Cooling? Also, the operating principal of the Bullet Blender is different than other bead mill homogenizers, so samples are not subjected to as much heat, and therefore, do not need to be cooled as much. (Most or all other homogenizers with cooling, have separate cooling modules or use cooling packs.) The Bullet Blender Gold models use temperature sensors and also monitor the homogenization conditions, so they can compensate for these factors and provide the precise amount of cooling to keep samples at or very near 4C, within a degree or two. The dry ice cooling system in the Bullet Blender Gold models is fully integrated with the instrument. The BB24AU which homogenizes samples in 1.5 mL microcentrifuge tubes, the BB5EAU which homogenizes samples in 5 mL tubes and BB50AU which homogenizes samples in 50 mL tubes. The 4☌ cooling feature comes on Gold models of the Bullet Blender ®. ![]() To pre-cool, fill the compartment with dry ice, remove any tubes from the instrument and select Cool Down from the main menu of your Bullet Blender Gold. Some users prefer to pre-cool their Bullet Blenders before use. When the instrument is in operation, cold air from the compartment is drawn into the instrument, cooling the samples. 4☌ cooling uses a compartment filled with dry ice to keep samples at 4☌ within a couple of degrees. The Gold model Bullet Blenders have a smart, integrated 4☌ cooling system which monitors the motor parameters and the air temperature, so it accurately controls the cooling to keep your samples at about 4C. Reference Manual with helpful suggestions and pictures ![]()
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