--- title: "Thermal Control Update: Modified Plate Stacker for Caliper Twister II" description: Thermal control solution, the Thermal Plate Stacker, has been modified by MéCour. image: https://www.mecour.com/hs-fs/file-14377823-png/images/thermal_mapping_mecour_plat1.png --- [![mecour precise temperature control solutions call 978-372-6085](https://www.mecour.com/hs-fs/file-2468430422-png/images/Logo.png "mecour precise temperature control solutions call 978-372-6085")](https://www.mecour.com/) This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. # 978-372-6085 ### Is this how you're maintaining the temperature of your expensive samples? ### We have a better solution. [![browse our product catalog](https://no-cache.hubspot.com/cta/default/49801/053573f8-f95e-4a6a-b67f-eb1544c95fb9.png)](https://cta-redirect.hubspot.com/cta/redirect/49801/053573f8-f95e-4a6a-b67f-eb1544c95fb9) # laboratory temperature control tips & techniques ## [Thermal Control Update: Modified Plate Stacker for Caliper Twister II](https://www.mecour.com/blog/bid/82201/Thermal-Control-Update-Modified-Plate-Stacker-for-Caliper-Twister-II) Posted by [Ken Linehan](https://www.mecour.com/blog/author/ken-linehan) - [Tweet](https://twitter.com/share) MéCour displayed [Caliper’s](https://www.mecour.com/partners/caliper/) 40 plate capacity Thermal Plate Stacker thermal control solution at the [SLAS](http://www.slas2012.org/index.cfm) show with corresponding thermal mapping detailing temp measurements at points inside the Stacker.  Thermistors were placed at every 10 plates - the base, lower and upper quarter section and top - for overall temperature monitoring.  The Blue Channel 1 probe details the temperature furthest from set point due to ***top*** protective cover that does not completely seal out ambient influence. Reason being that Twister II needs free access for cover removal. See detailed graph and results below. ![Thermal map of plate stacker](https://www.mecour.com/hs-fs/file-14377823-png/images/thermal_mapping_mecour_plat1.png?width=600&height=436&name=thermal_mapping_mecour_plat1.png)   ![Thermal Mapping MeCour 2](https://www.mecour.com/hs-fs/file-14377773-png/images/thermal_mapping_mecour_2.png?width=600&height=434&name=thermal_mapping_mecour_2.png) Per customer and Caliper's suggestions, we modified the original “open-faced” unit that provided the TWISTER II access to the plates with a light weight gripper friendly top/front cover as shown below. | Front with new removable cover ![Thermal Stacker Front](https://www.mecour.com/hs-fs/file-14377885-png/images/thermal_stacker_front.png) |                     | Original with plates exposed   ![Thermal Stacker back](https://www.mecour.com/hs-fs/file-14377841-png/images/thermal_stacker_back.png)     | | --- | --- | --- | The TWISTER now removes the cover and then accesses the plates. Significant improvements were documented and more importantly, we virtually eliminated any condensation inside the Stacker that in the past created headaches to end-users. ![Thermal Plate Stacker with POD](https://www.mecour.com/hs-fs/file-14377862-png/images/thermal_stacker_cover_pod.png) The current Thermal Stacker sits adjacent to the standard Caliper POD (picture on right) where open plate stackers reside. MéCour will modify your plate stacker to afford customers with temperature controlled plates prior to placement on deck. Temperature range is from 0°C to 120°C, and MéCour will make 20, 30, or more plate capacity Thermal Stackers. 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