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Thermo Fisher

Thermoflex 900 Recirculating Chiller

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Power

115 V / 60 Hz, single phase[2]

Vacuum

P2 pump[2]

How it works

The Thermoflex 900 uses an air-cooled condenser, a refrigeration system, and a recirculating pump to maintain fluid temperature and volume. The Thermoflex 900 includes a microprocessor controller for operating control.[2][3]

The Thermoflex 900 can include a positive-displacement P1 pump or a positive-displacement P2 pump. The P1 pump is stated at 2.1 gpm at 60 psig, and the P2 pump is stated at 4.0 gpm at 60 psig.[3][2]

Where it fits in the process flow

The Thermoflex 900 supplies temperature-controlled fluid to external circulation applications, open containers, and closed-loop systems.[2][3]

The Thermoflex 900 uses an air-cooled condenser that removes application heat with ambient room air.[2][3]

What do the numbers mean?

Power & electrical1

Power requirement
115 V / 60 Hz, single phase[2]
Accurate?

Vacuum & pumping4

Pump configuration
P2 pump[2]
Accurate?
Pump performance
4.0 gpm at 60 psig[2]
Accurate?
Pump configuration
P1 pump[3]
Accurate?
Pump performance
2.1 gpm at 60 psig[3]
Accurate?

Configuration & options11

Manufacturer
Thermo Scientific[1]
Accurate?
Model
Thermoflex 900[1]
Accurate?
Type
Recirculating Chiller[1]
Accurate?
Cooling method
Air cooled only[2]
Accurate?
Cooling capacity
900 W (3074 BTU) at 20°C[2]
Accurate?
Reservoir volume
7.2 liter (1.9 gallon)[2]
Accurate?
Set point temperature range
+5°C to +40°C[2]
Accurate?
Ambient temperature range
+10°C to +40°C[2]
Accurate?
Refrigerant
R134A, 19.0 oz[2]
Accurate?
Communications
RS232 ports on the back[3]
Accurate?
Compliances
SEMI S2 Compliant – S2-0703, S8-0705, S14-0704 & F47-0706[2]
Accurate?

Vintage & configurations

Documented models & variants

DesignationGenerationVintageChangesSource
Thermo Scientific Neslab ThermoFlex 900 Recirculating Chiller, AIR COOLED, P2 Pump, 900 Watt, 115 VAC——Air cooled, P2 pump, 900 Watt, 115 VAC.idealvac.com[2]
Thermo Scientific Neslab ThermoFlex 900 Recirculating Chiller, AIR COOLED, P1 Pump, 900 Watt, 115 VAC——Air cooled, P1 pump, 900 Watt, 115 VAC.idealvac.com[3]
ThermoFlex 900 Recirculating Chiller, AIR COOLED, P2 Pump——P2 pump; 4.0 gpm at 60 psig.idealvac.com[2]
ThermoFlex 900 Recirculating Chiller, AIR COOLED, P1 Pump——P1 pump; 2.1 gpm at 60 psig; RS232 ports on the back.idealvac.com[3]
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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Pump configurationP2 pump[2]
  • Pump performance4.0 gpm at 60 psig[2]
  • Pump configurationP1 pump[3]
  • Pump performance2.1 gpm at 60 psig[3]
  • Power requirement115 V / 60 Hz, single phase[2]

Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

What type of cooling is used?

The Thermoflex 900 is air cooled, and the condenser uses ambient room air to remove application heat.[2][3]

Not publicly documented

The following facts about the Thermoflex 900 Recirculating Chiller are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the Thermoflex 900 Recirculating Chiller are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • The control-system platform and OS era of the Thermoflex 900 Recirculating Chiller are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the Thermoflex 900 Recirculating Chiller are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the Thermoflex 900 Recirculating Chiller is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the Thermoflex 900 Recirculating Chiller are on record.

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (3)Every fact above is drawn from these public sources
  1. [1]Equipment inventory listing
  2. [2]idealvac.com — idealvac.comidealvac.com
  3. [3]idealvac.com — idealvac.comidealvac.com
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Last updated Oct 6, 2026.

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