The Invitrogen Qubit 4 Fluorometer, manufactured by Thermo Fisher Scientific, is a compact benchtop fluorescence instrument designed for sensitive and accurate quantification of DNA, RNA, and proteins using compatible Qubit assay kits.
Featuring an intuitive color touchscreen, integrated assay workflows, and advanced fluorescence detection technology, the Qubit 4 provides a convenient solution for molecular biology, genomics, biotechnology, and life science laboratories.
This unit has been professionally evaluated by LabCycle Partners and successfully passed all five components of the official Qubit 4 System Verification Test.
The instrument was factory reset, updated to software version 2.20, and verified using the Qubit 4 System Verification Assay Kit (Q33237).
A detailed functional assessment report documenting the inspection and verification results is available.
Fluorescence-based quantification of DNA, RNA, and proteins using compatible assay kits
Intuitive color touchscreen interface
Dedicated assay menus for dsDNA, RNA, Oligo, and Protein
Integrated Fluorometer mode
Built-in Timer and Reagent Calculator
Data management and instrument settings
Blue LED (470 nm) and Red LED (635 nm) excitation sources
Green and Far Red fluorescence detection channels
Compact benchtop design
USB connectivity
Built-in System Verification functionality
Manufacturer: Invitrogen / Thermo Fisher Scientific
Model: Qubit 4 Fluorometer
Catalog Number / MPN: Q33226
Serial Number: 2322619047869
Manufacturing Date: April 29, 2019
Country of Manufacture: Singapore
Software Version: 2.20.1
Firmware Version: 0.30
Display: Integrated Color Touchscreen
Excitation Sources: Blue LED (470 nm) and Red LED (635 nm)
Detection Channels: Green Fluorescence and Far Red Fluorescence
Available Assay Menus: dsDNA, RNA, Oligo, Protein
Additional Functions: Timer, Fluorometer, Reagent Calculator, Data Management
Connectivity: USB-A and Mini-USB
Power Requirements: 12V DC, 2.5A Max.
Condition: Pre-Owned – Tested Working – System Verification PASS
The instrument is in good overall cosmetic condition, with normal signs of previous use.
A detailed functional assessment was performed by a LabCycle Partners technician on October 21, October 26, and November 2, 2026.
Successful power-on and initialization
Touchscreen interface operational
Assay selection menu accessible
Settings and instrument profile menus successfully navigated
Factory reset completed
Previous user data and settings cleared
Software updated from version 2.19 to version 2.20
New default instrument profile created
Official Qubit 4 System Verification Test completed successfully
The instrument was tested using the Qubit 4 System Verification Assay Kit (Q33237).
All five verification components passed:
Green Fluorescence Channel: PASS
Far Red Fluorescence Channel: PASS
Blue LED (470 nm): PASS
Red LED (635 nm): PASS
Photodiode: PASS
The instrument generated the following fluorescence readings during verification:
Green Fluorescence (RFU):
Reagent 1: 78.12
Reagent 2: 8532.83
Reagent 3: 91.30
Far Red Fluorescence (RFU):
Reagent 1: 94.11
Reagent 2: 30.75
Reagent 3: 5898.10
Assessment Result: SYSTEM VERIFICATION PASS
The verification confirms successful testing of the instrument's fluorescence detection channels, excitation LEDs, and photodiode.
No independent quantitative DNA, RNA, or protein sample assay was performed.
A detailed LabCycle Partners Functional Assessment Report, dated November 2, 2026, documents the inspection, service actions, and verification results.
Download Functional Assessment Report (PDF)
Invitrogen Qubit 4 Fluorometer (Q33226)
Power cable/adapter as photographed
Only the equipment and components shown in the photographs are included.
Please review all photographs for actual condition and included items.
DNA quantification
RNA quantification
Protein quantification
Oligonucleotide quantification
Molecular biology research
Genomics and sequencing workflows
Biotechnology research
Pharmaceutical and life science laboratories
General laboratory fluorescence analysis
Compatible assay kits and reagents are required for specific quantitative applications.
This item will be carefully packaged with special protection for the glass bottle to ensure safe delivery.
Shipping costs are calculated automatically based on the buyer’s location.
Local pickup is available in San Diego, California.
The Invitrogen Qubit 4 Fluorometer, manufactured by Thermo Fisher Scientific, is a compact benchtop fluorescence instrument designed for sensitive and accurate quantification of DNA, RNA, and proteins using compatible Qubit assay kits.
Featuring an intuitive color touchscreen, integrated assay workflows, and advanced fluorescence detection technology, the Qubit 4 provides a convenient solution for molecular biology, genomics, biotechnology, and life science laboratories.
This unit has been professionally evaluated by LabCycle Partners and successfully passed all five components of the official Qubit 4 System Verification Test.
The instrument was factory reset, updated to software version 2.20, and verified using the Qubit 4 System Verification Assay Kit (Q33237).
A detailed functional assessment report documenting the inspection and verification results is available.
Fluorescence-based quantification of DNA, RNA, and proteins using compatible assay kits
Intuitive color touchscreen interface
Dedicated assay menus for dsDNA, RNA, Oligo, and Protein
Integrated Fluorometer mode
Built-in Timer and Reagent Calculator
Data management and instrument settings
Blue LED (470 nm) and Red LED (635 nm) excitation sources
Green and Far Red fluorescence detection channels
Compact benchtop design
USB connectivity
Built-in System Verification functionality
Manufacturer: Invitrogen / Thermo Fisher Scientific
Model: Qubit 4 Fluorometer
Catalog Number / MPN: Q33226
Serial Number: 2322619047869
Manufacturing Date: April 29, 2019
Country of Manufacture: Singapore
Software Version: 2.20.1
Firmware Version: 0.30
Display: Integrated Color Touchscreen
Excitation Sources: Blue LED (470 nm) and Red LED (635 nm)
Detection Channels: Green Fluorescence and Far Red Fluorescence
Available Assay Menus: dsDNA, RNA, Oligo, Protein
Additional Functions: Timer, Fluorometer, Reagent Calculator, Data Management
Connectivity: USB-A and Mini-USB
Power Requirements: 12V DC, 2.5A Max.
Condition: Pre-Owned – Tested Working – System Verification PASS
The instrument is in good overall cosmetic condition, with normal signs of previous use.
A detailed functional assessment was performed by a LabCycle Partners technician on October 21, October 26, and November 2, 2026.
Successful power-on and initialization
Touchscreen interface operational
Assay selection menu accessible
Settings and instrument profile menus successfully navigated
Factory reset completed
Previous user data and settings cleared
Software updated from version 2.19 to version 2.20
New default instrument profile created
Official Qubit 4 System Verification Test completed successfully
The instrument was tested using the Qubit 4 System Verification Assay Kit (Q33237).
All five verification components passed:
Green Fluorescence Channel: PASS
Far Red Fluorescence Channel: PASS
Blue LED (470 nm): PASS
Red LED (635 nm): PASS
Photodiode: PASS
The instrument generated the following fluorescence readings during verification:
Green Fluorescence (RFU):
Reagent 1: 78.12
Reagent 2: 8532.83
Reagent 3: 91.30
Far Red Fluorescence (RFU):
Reagent 1: 94.11
Reagent 2: 30.75
Reagent 3: 5898.10
Assessment Result: SYSTEM VERIFICATION PASS
The verification confirms successful testing of the instrument's fluorescence detection channels, excitation LEDs, and photodiode.
No independent quantitative DNA, RNA, or protein sample assay was performed.
A detailed LabCycle Partners Functional Assessment Report, dated November 2, 2026, documents the inspection, service actions, and verification results.
Download Functional Assessment Report (PDF)
Invitrogen Qubit 4 Fluorometer (Q33226)
Power cable/adapter as photographed
Only the equipment and components shown in the photographs are included.
Please review all photographs for actual condition and included items.
DNA quantification
RNA quantification
Protein quantification
Oligonucleotide quantification
Molecular biology research
Genomics and sequencing workflows
Biotechnology research
Pharmaceutical and life science laboratories
General laboratory fluorescence analysis
Compatible assay kits and reagents are required for specific quantitative applications.
This item will be carefully packaged with special protection for the glass bottle to ensure safe delivery.
Shipping costs are calculated automatically based on the buyer’s location.
Local pickup is available in San Diego, California.
