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Another advantage of our design is that we have separated the control panel from the actual heating block. Thus the heating block is very small and easily fits into areas where space is at a premium, like the deck of a robotic workstation. |
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An additional use for the Heating Blocks is in conjunction with our evaporation manifolds to aid in the evaporation of solvents from microplates or test tubes. We make heating blocks to fit your application.
Contact us with your needs. |
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If stirring at the same time on one of our Tumble Stirrers, the bottoms of the wells, tubes or vials are only 1.9 cm above the stir deck for maximum magnetic coupling. If heating above 100C on a Tumble Stirrer, it is recommended that the Stirrer also be Mica heat-protected, for example, see VP 710E-2HM-1 This Heating Block is available in a 230 volt version that is CE compliant (VP 741AW-RCE-MB). Both versions above can be made with a slightly thicker SBS Adaptor Base of 18.75 mm thickness (VP 741AW-R-MA and VP 741AW-RCE-MA) for situations in which the Heating Block needs to be raised, for example, with certain robotic plate nests. |
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Click here to see how the VP 741ABW-R-MB Heating Block is used on a VP 710E-2HM-1 Tumble Stirrer. Note that the SBS Mica insulating Adaptor Bases attached to the undersides of the Heating Blocks fit nicely into the SBS Mica pockets on our Tumble Stirrers. This Heating Block is also available in a 230 volt version that is CE compliant (VP 741ABW-RCE-MB). In addition, these versions can be made with a slightly thicker SBS Adaptor Base of 18.75 mm thickness (VP 741ABW-R-MA and VP 741ABW-RCE-MA) for situations in which the Heating Block needs to be raised, for example, with certain robotic plate nests. Several of our Heating Blocks, including the VP 741ABW-R-MB, have been made with features that allow computer control of the temperature variables. We are currently updating our computer control system and will post the features when available. However, if you are interested at any time, please contact V&P Scientific technical personnel by phone or email (sales@vp-scientific.com). |
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One increasingly popular use of the VP 741BW-R-MB Heating Block is in protocols involving PCR plates, for example, DNA extraction from samples, DNA cleanup after reactions, and sizing for NextGen Sequencing. The Heating Block comes with an SBS Adaptor Base made of 12.5 mm thick Mica that is attached to the Heating Block’s underside. This Base provides heat protection for surfaces below the Heating Block and facilitates its use on SBS-configured locations such as V&P Stirrers or robotic decks. The Mica is safety rated by UL laboratories as UL 94VO. The VP 741BW-R-MB can be used to heat standard microplates, PCR plates, deepwell plates or SBS-sized racks of tubes or vials from 25°C to 200°C. Temperature is controlled by a Watlow PID controller that uses an RTD (Resistive Thermal Device) heat sensor. RTD sensors are advantageous because they are not affected by the moving magnetic fields generated by V&P Tumble Stirrers. This becomes important when heating and stirring simultaneously (see below).
Heating of PCR plates or racks of tubes is greatly facilitated using V&P’s Heating Inserts such as the VP 741I6A for 96-well PCR plates or the VP 416-ALB-48 for 12 mm diameter tubes or vials. We provide a variety of Heating Inserts for various microplates and tubes to accelerate and maintain heated temperatures, and we customize Heating Inserts as needed. If stirring at the same time on one of our Tumble Stirrers, the bottoms of the wells, tubes or vials are only 1.9 cm above the stir deck for maximum magnetic coupling. If heating above 100C on a Tumble Stirrer, it is recommended that the Stirrer also be Mica heat-protected, for example, see VP 710SM4PH This Heating Block is available in a 230 volt version that is CE compliant VP 741BW-RCE-MB. In addition, both versions above can be made with a slightly thicker SBS Adaptor Base of 18.75 mm thickness VP 741BW-R-MA and VP 741BW-RCE-MA for situations in which the Heating Block needs to be raised, for example, with certain robotic plate nests. Promega has incorporated one of our VP 741B version Heating Blocks as an important component in their DNA IQTM Forensic Assay. In this article, they show that the efficacy and uniformity of heating with the VP 741B version Heating Block is excellent. |
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Click here to see how the VP 741BBW-R-MB Heating Block is used on a VP 710SM4PH Tumble Stirrer. Note that the SBS Mica insulating Adaptor Bases attached to the undersides of the Heating Blocks fit nicely into the SBS Mica pockets on our Tumble Stirrers. This Heating Block is also available in a 230 volt version that is CE compliant, VP 741BBW-RCE-MB. In addition, these versions can be made with a slightly thicker SBS Adaptor Base of 18.75 mm thickness (VP 741BBW-R-MA and VP 741BBW-RCE-MA) for situations in which the Heating Block needs to be raised, for example, with certain robotic plate nests. All Heating Blocks listed above can be made with features that allow computer control of the temperature variables. We are currently updating our computer control system and will post the features when available. However, if you are interested at any time, please contact V&P Scientific technical personnel by phone or email (sales@vp-scientific.com). |
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The VP 743AW-R-MB-1 replaces the VP 743A with its Mica insulation. Instead of just insulating the heating block we attach Mica insulation to the VP 710E-2HM Tumble Stirrer deck to protect it from the 200C heat. The VP 743AW-R-MB-1 uses three Mica insulation blocks to position on the VP 710E-2HM Tumble Stirrer. The VP 743A-1RM uses an RTD probe to determine the temperature. RTD probes are not sensitive to magnetic field sweeps and therefore are preferable for magnetic stirring operations. |
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The three Mica insulation blocks on the bottom of the VP 743AW-R-MB-1 heat block. |
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The VP 743AW-R-MB-1 is used to heat three polypropylene microplates or racks of glass vials from 25C to 200C. The temperature is determined +/- 1C by a Watlow controller and a RTD temperature sensor. It requires 115 volts at 4.6 amps to power four cartridge heaters. It will bring water to a boil in 8 minutes and the block up to 200C in 15 minutes. The outside dimensions of the block including the insulation are 60.7cm long by 12.4 cm wide and 6.6 cm tall. With the lid in place it is 7.3 cm tall. |
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The three cavities of the VP 743AW-R-MB-1 heat block are separated by an aluminum web. Each cavity is 12.8 cm long, 8.6 cm wide and 3.5 cm deep. The bottom of the wells or vials are only 2.4 cm above the stir deck for maximum magnetic coupling. The VP 743AW-R-MB-1 was designed to be used with the VP 710E-2HM series Alligator Tumble Stirrer. |
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Designed to meet the high temperature requirements of chemists to heat and stir reactions the VP 743AW-R-MB-1 heat block is constructed of anodized aluminum and has a lid that can be screwed into place to seal cap mats onto deep well microplates. The VP 743AW-R-MB-1 is also available in a 230 volt version that is CE complaint (VP 743AW-R-MB-1CE). |
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The photo to right illustrates a VP 741A-RM-B on VP 710E-2HM-1. |
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Follow this link for more information about the StirBase. We have also tested the Environmental Express 36-Position Manual HotBlock with our Tumble Stirrers by placing supporting legs under the HotBlock. This configuration can be used if the materials to be heated and stirred are not corrosive enough to require protection of the Tumble STirrer.
The photos to the right and videos below illustrate how a Manual HotBlock can be used with our VP 710E-2 Tumble Stirrer and our VP 710C1 Tumble Stirrer.
Download Video
Download Video
Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version. |
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This is a simple yet very effective solution to enhance heat transfer.
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VP 741I6B |
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VP 741I6A |
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Eddy currents are currents induced in conductors like aluminum. When a conductor is exposed to a rapidly rotating magnetic field (present in our Tumble Stirrers) it can cause a circulating flow of electrons or current, within the body of the conductor. These circulating eddies of current have inductance and thus induce magnetic fields. These fields can cause repulsive, attractive, propulsion and drag effects. The stronger the applied magnetic field, or the greater the electrical conductivity of the conductor, or the faster the field changes, then the greater the currents that are developed and the greater the fields produced. In the case of Tumble Stirrers with heat blocks and heat block inserts this produces additional heat in the block or insert and it also causes drag on the Tumble Stirrer motor. We make specially designed inserts and heat blocks that that minimizes the Eddy current phenomena resulting from magnetic lines of flux passing through large masses of aluminum without affecting the heat block or insert’s ability to transfer heat. Our unique Eddy current defeating design reduces the load on the magnetic stirrer's motor and also reduces the temperature to which the aluminum insert is heated up to. This heat reduction is important in applications where the temperature of the heat insert needs to be less than 40°C. |
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The VP 416-ALB-8 is a Heat Block Insert with SBS microplate dimensions that fits inside our standard VP 741 through VP 744 Heat Block series. It has a special design that minimizes the Eddy current phenomena resulting from magnetic lines of flux passing through large masses of aluminum without affecting the insert’s ability to transfer heat. The Eddy current defeating design reduces the load on the magnetic stirrer's motor and also reduces the temperature to which the aluminum insert is heated up to. This heat reduction is important in applications where the temperature of the heat insert needs to be less than 40°C. |
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The heat block insert has 8 flat bottom wells, each 25 mm in diameter. The insert comes with a lid that has holes above each well for more even heating while allowing samples to be added or removed while the lid is still in place. |
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The heat block insert has 20 flat bottom wells, each 17 mm in diameter by 20.7 mm deep. |
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The heat block insert has 24 flat bottom wells, each 15.1 mm in diameter by 20.7 mm deep. |
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The heat block insert
has 30 wells shaped to accommodate microcentrifuge
tubes.
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The heat block insert has 48 round bottom wells each 12 mm in diameter by 20.7 mm deep. |
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The tubes used are 5 mL round bottom tubes with the dimensions of 12 x 75 mm. |
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The heat block insert has 96 flat bottom wells each 8.6 mm in diameter by 21.7 mm deep. |
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8 mm dia. x 30 mm tall for the shorter one 8 mm dia. x 43 mm tall for the taller one |
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If you need a peristaltic pump check out VP 560. |
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The Photo to right illustrates the serpentine heating/cooling channels. |
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Specifications: Overall Length = 5.420" Width = 4.134" Height = 1.375" SBS Footprint Length = 5.020" Width = 3.355" Height = 0.50"
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Follow this link to data showing the ability of the VP 581C-AL to stabilize the temperature of a 96 well microplate with 300 ul of distilled water in each well. The VP 581C-AL were either chilled to 7.8C or -13C prior to placing on the robot deck. |
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