Tokai Hit STXG-GSI2X stage top incubator for Leica Stellaris STED microscope
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The contract specifies the procurement of a Tokai Hit STXG-GSI2X-SET stage top incubator designed exclusively for integration with the Leica Stellaris 5 STED microscope to enable live cell imaging under precise environmental conditions. The system must dynamically regulate temperature, humidity, CO₂, and oxygen levels to support long-term imaging of live cells with super-resolution capabilities, a function currently unavailable due to the absence of a stage top incubator. The incubator must maintain specimen temperature between 25 and 50°C using dual feedback modes—chamber and specimen temperature—with real-time monitoring of room temperature to ensure stability. It includes a built-in digital gas mixer that precisely controls CO₂ concentrations from 5.0 to 20.0% using 100% CO₂ from the lab supply and an internal humidifier to maintain optimal humidity directly at the sample site. The device must be lightweight, weighing less than 140 grams, and compact with dimensions of 112 x 87 mm to fit the Leica Super Z galvo stage without compromising system performance. It features magnetic holders compatible with a variety of specimen formats including 35 mm and 50/60 mm coverglass dishes, chamber slides, and multi-well plates, along with a flexible heated collar that accommodates different objective lens diameters. The unit includes a user-adjustable objective heater, an autoclavable external sensor for sample feedback regulation, and native software integration with LAS-X for data logging and programmable control of temperature and CO₂ settings. The system is designed for use with 110–240V power and is to be procured under a Small Business Set-Aside contract issued by the National Institutes of Health’s Office of Acquisition and Logistics, with bids due by July 25, 2026, and performance based in Bethesda, Maryland.
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Place of Performance
Bethesda, MD, 20892, USASet-Aside
Documents
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Full Description
Requirements:
Provides accurate dynamic control of temperature, humidity, CO2 and oxygen to maintain required cell culture conditions for live cell confocal and STED super-resolution imaging. The stage top incubator is required in order to perform live cell imaging with the unique resolution capabilities of our Leica Stellaris 5 STED microscope. It currently does not have a stage top incubator, and therefore, is unable to perform this type of imaging requested by NCI researchers.
Stage top incubator controller must have two feedback modes, chamber temperature or specimen temperature, while it also continuously monitors the room temperature to maintain specimen temperature within set point anywhere between 25 – 50 degrees Celsius. The built-in digital gas mixer controller accepts 100% CO2 from lab supply to regulate CO2 concentration at the sample, with a CO2 range of 5.0 to 20% with real-time sample feedback. In addition, humidity is actively controlled with an internal humidifier to sense sample chamber humidity. The electrically heated stage top incubator chamber must have magnets for easy interchange of specimen holders, including inserts for 35 mm coverglass dish, 50/60mm coverglass dish, chamber slide, coverglass chamber, and open frame insert for imaging multi-well chambers. A flexible heated collar that accommodates a range of objective lens diameters must also be included.
The components of the stage top incubator must include:
- Tokai Hit STXG-GSI2X-SET Stage Top Incubator for Super Z galvo stage (inverted microscope stands)
- Pure (100%CO2) gas use (110- 240V) for individual temperature settings to create optimum temperature and humidity conditions without difficulty for long term live cell imaging.
- Setting temperature range from 25 to 50°C.
- Dimensions of 112 x 87 mm compatible with Leica Super Z galvo stage on existing Leica Stellaris 5 STED microscope.
- the lightest chamber (less than 140g) for Super Z Glavo stage
- temperature controller with built-in digital gas mixer (CO2: 5.0 - 20.0%)
- Objective heater
- Magnetic Dish holder and fixing lid for 35mm, 50/60mm dish, chamber slide, slide glass and chamber slide use.
- External Sensor, enable to autoclave repeatability for Sample Feedback regulation.
- Tokai Hit original data logging, temp/CO2 program control, software compatible to use with LAS-X software