ESO wikiadmin: Created page with "This page is also available in german 🇩🇪. = Varioskan Flash - Basic Operation Guide = == Overview == The Varioskan Flash is a multimode microplate reader for various detection methods (absorbance, fluorescence, luminescence, time-resolved fluorescence). This guide provides a basic overview - '''the manual remains essential for detailed protocols!''' == Preparation == === 1. Power on the instrument === * Activate main power..."

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Created page with "This page is also available in german 🇩🇪. = Varioskan Flash - Basic Operation Guide = == Overview == The Varioskan Flash is a multimode microplate reader for various detection methods (absorbance, fluorescence, luminescence, time-resolved fluorescence). This guide provides a basic overview - '''the manual remains essential for detailed protocols!''' == Preparation == === 1. Power on the instrument === * Activate main power..."

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This page is also available in [[Thermo Scientific Varioskan Flash|german 🇩🇪]].

= Varioskan Flash - Basic Operation Guide =

== Overview ==
The Varioskan Flash is a multimode microplate reader for various detection methods (absorbance, fluorescence, luminescence, time-resolved fluorescence). This guide provides a basic overview - '''the manual remains essential for detailed protocols!'''

== Preparation ==

=== 1. Power on the instrument ===

* Activate main power switch on device
* Wait for initialization to complete (approx. 2-3 minutes)
* Start "SkanIt" software on computer

=== 2. Check basic settings ===

* Instrument should be warmed up (at least 30 min before measurement)
* Check temperature if temperature-controlled measurement is planned
* Verify lamp status (Xenon/Halogen depending on application)

== Sample Preparation ==

=== Microplates ===

* '''Compatible plates:''' 96/384-well plates
* '''Plate type considerations:'''
** Clear plates for absorbance
** Black plates for fluorescence/luminescence
** White plates for luminescence (optimal)

=== Sample Volume ===

* '''Minimum:''' ~50 μl (96-well), ~10 μl (384-well)
* '''Optimal:''' 100-200 μl (96-well), 20-50 μl (384-well)
* Avoid air bubbles!

== Software Operation (SkanIt) ==

=== 1. Create new protocol ===

* Select "New Protocol"
* Choose measurement type:
** '''Absorbance:''' for ELISA, protein assays, cytotoxicity
** '''Fluorescence:''' for Live/Dead assays, calcium imaging
** '''Luminescence:''' for ATP assays, reporter genes

=== 2. Set parameters ===
'''Absorbance:'''

* Select wavelength(s) (e.g., 450 nm for ELISA)
* Reference wavelength optional (e.g., 620 nm)

'''Fluorescence:'''

* Excitation wavelength (Ex)
* Emission wavelength (Em)
* Adjust gain/amplification

'''Luminescence:'''

* Set integration time
* Delay time if necessary

=== 3. Define plate layout ===

* Mark wells: samples, standards, blanks, controls
* Dilution series can be calculated automatically
* Define replicates

== Performing Measurements ==

=== 1. Insert plate ===

* Carefully insert plate into carrier
* Note position A1 (usually top left)
* Close lid

=== 2. Start measurement ===

* Click "Start" in software
* '''Do not open instrument during measurement!'''
* Measurement time depending on protocol: 30 seconds to several minutes

=== 3. Kinetic measurements ===

* For time-dependent measurements (e.g., enzyme assays)
* Set interval and total duration
* Maintain constant temperature

== Data Analysis ==

=== 1. Check raw data ===

* Heatmap view for quick quality control
* Identify outliers
* Check blank values

=== 2. Calculations ===

* Blank subtraction
* Create standard curve (for quantitative assays)
* Concentration calculations

=== 3. Export ===

* Export data as Excel file
* Save graphs as images
* Save protocol for reproducibility

== Important Tips ==

=== Before measurement ===

* ✅ Bring plate to room temperature
* ✅ Avoid condensation
* ✅ Minimize pipetting errors
* ✅ Include positive/negative controls

=== During measurement ===

* ❌ Do not open instrument
* ❌ Avoid vibration
* ❌ Avoid direct lighting (for fluorescence)

=== After measurement ===

* ✅ Save data immediately
* ✅ Document protocol
* ✅ If problems occur: repeat measurement

== Common Applications ==
{| class="wikitable"
!Assay Type
!Mode
!Typical Wavelengths
!Plate Type
|-
|ELISA
|Absorbance
|450 nm (+ 620 nm Ref)
|Clear
|-
|MTT/XTT
|Absorbance
|570 nm (+ 630 nm Ref)
|Clear
|-
|FITC/GFP
|Fluorescence
|Ex: 485 nm, Em: 520 nm
|Black
|-
|Cy5
|Fluorescence
|Ex: 640 nm, Em: 680 nm
|Black
|-
|ATP Assay
|Luminescence
| -
|White
|}

== Maintenance & Safety ==

=== Routine Care ===

* Keep instrument clean
* Clean plate carrier regularly
* Monitor filter/lamp status

=== Safety ===

* ⚠️ UV light: Protective eyewear for UV applications
* ⚠️ Note laser class
* ⚠️ Electrical safety: No water on instrument

----'''⚠️ IMPORTANT:''' This guide does NOT replace the official manual! Always consult the manufacturer's manual for specific protocols, troubleshooting, and advanced functions.

Thermo Scientific Varioskan Flash eng - Revision history