CRFT (Controlled Rate Freeze Thaw) System: Programmable, LN₂-free freeze and thaw for iPSCs & organoids

Preserve Your iPSCs & Organoids with Precision. CRFT delivers reproducible temperature profiles, an exportable audit trail, and automation-ready interfaces, so sensitive stem cell models recover with high viability and consistent function.
Applications
iPSCs
  • Optimal cooling between –0.3 to –1.8 °C/min enhances survival
  • Three-zone strategies (fast–slow–fast) fine-tune dehydration and nucleation balance
Organoids
  • Slow, controlled freezing better preserves organoid architecture versus vitrification alone
  • Precise thawing reduces thermal stress and improves post-thaw recovery
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About

Why CRFT for iPSC & Organoids?

Proven outcomes with controlled-rate freezing. Peer-reviewed workflows using a Grant controlled-rate freezer reported ~94% viable hiPSC-derived cardiomyocytes after cryo-recovery, versus ~60% with older approaches; CRFT brings this level of control to bench-scale iPSC and organoid banking. (Efficient and reproducible generation of human iPSC-derived cardiomyocytes and cardiac organoids in stirred suspension systems | Nature Communications)

 

Reproducible protocols, not folklore. Define cooling, seeding and thaw ramps (including three-zone “fast–slow–fast” freezing profiles) and lock them. Fewer restarts; less user to user variability, optimal cryo recovered patient derived cellular models. (https://pmc.ncbi.nlm.nih.gov/articles/PMC8909336/Ref)

 

Right tool for 3D biology. Organoid preservation is size and type dependent. Delicate stem cell and organoid structures need gradual, consistent temperature control during cryopreservation. CRFT offers programmable freeze/thaw profiles that safeguard structural and functional integrity minimising ice damage and maximizing recovery. CRFT standardises slow-freeze workflows (CPA equilibration holds; seed at −8 to −12 °C with Cryopen) where slow freezing is preferred/required for some organoids. (https://pmc.ncbi.nlm.nih.gov/articles/PMC8909336/Ref)

 

Water-bath-free thaw. Program warm-up to standardise recovery and support cleanroom practice; pair with validated dilution steps(e.g., ROCK inhibitor use for iPSCs as required).  (https://pmc.ncbi.nlm.nih.gov/articles/PMC8909336/Ref)

 

Freeze/thaw without LN₂; store as you prefer. CRFT replaces -80Cfreezer or LN₂  in the process steps; long-term storage is typically in LN₂/vapour or ≤−150 °C per best practice.  (https://pmc.ncbi.nlm.nih.gov/articles/PMC8909336/Ref)

Technical highlights:

  • Temperature Range: From -100 °C to +30 °C (Temperature range varies depending on the installed head)
  • Cooling/Thawing Rate: Up to ±10 °C/min with ±0.5 °C accuracy
  • Plate and Sample Adaptability: Handles SBS plates, cryovials, straws via modular heads (e.g., 55× 1.8 mL heads; recommended fill volumes 0.5–1.0 mL for control
  • Data Logging: real-time logging and exportable audit trail

Key Benefits:

  • Liquid-nitrogen-free operation with low running costs and safer handling
  • Precise control: cooling and thawing at up to ±10 °C/min, ±0.5 °C accuracy, ±1.0°C uniformity
  • Real-time data logging for full traceability and reproducibility
  • Interchangeable heads accommodate cryovials, plates, straws, and more
  • True benchtop portability (≈5 kg) for multi-lab deployment
  • Automated-friendly design for seamless integration into workflows

Products in the range

Video

Specifications

Dimensions (mm) – wdh 345 x 290 x 380 (lid off) / 460 (lid on)
Weight (kg) 5kg
Max plate temp (°C) 30°C
Min plate temp (°C) -100°C*
Temp accuracy +/- 0.5°C
Temp stability +/- 0.1°C
Temp uniformity +/- 1.0°C Ref
Max cooling rate 10°C min/min
Max thawing rate 10°C/min from -100°C
Max temp stabilisation time 5 mins
Plug type UK, EU or US
Power supply 100-240V, 50-60Hz (24V DC unit supply)
Warranty 2 years
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Accessories

H00

Head for 16x 0.5ml straws

H01

Head for 18x0.3ml IMV straws

H02

Head for 55x1.8ml cryovials (0.5ml max fill)

H03

Head for Flat universal plate

H05

Head for 1x SBS microplate

H06

Head for 55x1.8ml deep cryovials (1ml max fill)

CRFTCRYOPEN

Cryopen nucleating tool

CRFTCARTRIDGE

Replacement cartridge for cryopen

CRFT UPS

Un-interruptible Power Supply for the CRFT for a 3 hour cycle in the event of an electrical power failure. 220-240v operation

CAL CRFT

Calibration certificate – single temperature point

CRFTMAINT 1

1 year maintenance agreement includes clean and test report(excludes repair and replacement of faulty parts)

CRFTCOMM

External communications protocol specification for the CRFT

IQOQCRFT

Installation Qualification (IQ), Operational Qualification (OQ) booklet for CRFT

PQ CRFT

Performance Qualification (PQ) booklet for CRFT

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Downloads

Software

download
CRFT Software

Product Manuals

download
CRFT Operating Manual

Technical Datasheets

No downloads available

Further Information

download
CRFT Evaluation Report
download
CRFT Flyer
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