MK350S Premium Advanced Spectro-Flicker Meter

8 customer reviews

3,689.00 Excl. VAT

Discover our MK350S Premium Light Spectrometer   

“Your Gateway to Light Expertise!”

Have you ever wondered who stands behind the MK350S Premium Light Spectrometer?

Well, it’s you! This indispensable tool is not only designed for scientists and professors but also for light enthusiasts, lighting manufacturers, lighting consultants, and quality control professionals. In short, anyone involved in light and quality measurements.

Why should you bring the MK350S Premium into your space?

Imagine being able to perform high-quality, laboratory-grade measurements directly and then effortlessly analyze, store, and share them with the rest of the world. That’s precisely what you need and can expect from this advanced device.

What makes the MK350S Premium so unique?

It’s not just a spectrometer; it’s our flagship model with a large display, an intuitive user interface, impressive computing power, and the ability to conduct all measurements stand-alone and on the fly. This spectrometer bridges the gap between complex science and daily use, allowing every light enthusiast to evolve into a true light expert. The MK350S Premium makes the “invisible” visible and opens all doors to a world of understandable light information.

What sets the MK350S Premium apart from the competition?

This is genuinely impressive! With the High-End spectral sensor, flicker sensor, and even a built-in CCD camera, you can effortlessly analyze and evaluate any light source from A to Z. This is your chance to get your hands on the most advanced technology, allowing you not only to measure light but also to fully comprehend it.

The MK350S Premium is not just an instrument; it contains a ton of advanced technology in just 250 grams.
Secondly, it’s your gateway to a world of light expertise, whether you’re a seasoned professional or simply passionate about lighting.

What are you waiting for?

Inquire about our latest offers and discover the MK350S Premium this week!

Basic Functionalities

  • CCT | Correlated Color Temperature: Precisely measure and understand the color temperature of light sources.
  • CRI | Color Rendering Index: Evaluate the color rendering capabilities for accurate representation of colors.
  • LUX | Luminance: Measure luminance to assess the brightness of light in various settings.
  • CIE 1931 & CIE 1976: Utilize color space models for in-depth analysis and representation of color.
  • Spectrum Graph and Numerical Data: Visualize and quantify spectral data for a comprehensive understanding of light composition.
  • 4.3″ 800×480 Resistive Touch LCD: Experience a user-friendly user interface with a high-resolution touch screen for intuitive navigation.
  • Data Output Options: Save and export data conveniently with SD card storage (up to 32GB) or through the Mini USB port (USB 2.0) 

Advanced Features

  • Wavelength Range: Covering 380 NM to 780 NM for comprehensive spectral analysis.
  • Built-in CCD Camera: Capture measurements visually, target light sources accurately, and analyze light distribution with the LUX G function. ( see images and manual guide )
  • Human Centric Lighting (HCL): Melanopic, Rhodopic, Choropic, Erythropic, and Cynanopic lux metrics for holistic lighting design.
  • SVM and Flicker Analysis: Assess Stroboscopic Effect Visibility (SVM) and Flicker Risk per IEEE PAR 1789 standards.
  • Color Metrics Mastery: TM30, TM18, TLCI, and Blue Hazard metrics (EB/KVB/RG) for comprehensive color rendering insights.
  • BIN / SDCM Checker: Validate lighting standards with ANSI C78.377 or customize BIN / SDCM checking.
  • Photosynthetically Active Radiation (PAR): Basic analysis for applications in horticulture.
  • More than 40 Data Points in One Measurement: Capture an extensive range of data points with a single measurement, providing in-depth insights.
  • Laboratory Software Integration: Utilize uSpectrum / uFlicker analysis and reporting software.
  • Mobile APP: iOS and Android remote-controlled measuring application for seamless functionality.

Customer and Product Services

  • 3-Year Factory Warranty: Enjoy a full three-year factory warranty on your MK350S Premium Spectrometer.
  • Factory Calibrated with a NIST traceable certificate: High-standard calibration with NIST traceable certificates
  • Free Recalibration: free 1st recalibration services within the warranty period, maintaining accuracy and reliability.
  • Quick Availability: Benefit from direct stock availability ( within 48 hours ) in Germany and the Netherlands.
  • Comprehensive Support: Access 24/7 technical support, personal product and software training by phone, and free educational handbooks (PDF) 
  • FREE Firmware and Software Updates: Ensure your spectrometer and lab software is up to date with the latest standards and regulations.


within 48 hrs after confirmed payment.


3 years full product warranty.


1 free UPRTEK Lighting Handbook.


One free calibration during guarantee periode


free firmware updates.


free technical support.


7 days money back guaranty (in consultion).


Transport & Insurance costs €34,75.


All Prices are Excluding VAT.


by PayPal, VISA, MasterCard, American Express or Bank Transfer.

MK350S Premium Advanced Spectro-Flicker Meter

In search of precise light measurement? Look no further than the MK350S Premium Advanced Spectro-Flicker Meter by UPRtek. Effortlessly achieve accuracy with this top-tier handheld spectrometer. Don’t miss out—get yours now and experience unparalleled performance.


Sensor CMOS Linear Image Sensor
Illuminance meter class Directional response conforms to JIS C 1609-1:2006 for General Class AA.
Directional response conforms to DIN 5032 Part 7 Class B.
Wavelength Range 380 to 780 nm
Wavelength Data Increment 1 nm
Spectral Bandwidth Approximately 9 nm (Half Bandwidth)
Wavelength Reproducibility ± 1 nm *1
Measurement Range 1 to 150,000  lx
Illuminance Accuracy Illuminant A @ 2,856 K*2*7 ± 2.5%
Illuminance Repeatability (2σ) 0.2%  in CIE 1931 x,y (100 to 150,000 lx)
0.5%  in CIE 1931 x,y (5 to 100 lx)
1% in CIE 1931 x,y (1 to 5 lx)
Color Accuracy ± 0.002 in CIE 1931 x,y(100 to 150,000 lx)
± 0.0025 in CIE 1931 x,y (5 to 100 lx)
±0.003 in CIE 1931 x,y (1 to 5 lx)
Color Repeatability  (2σ) 0.0002  in CIE 1931 x,y (500 to 150,000 lx)
0.0004  in CIE 1931 x,y (30 to 500 lx)
0.001  in CIE 1931 x,y (5 to 30 lx)
0.002  in CIE 1931 x,y (1 to 5 lx)
CCT Accuracy ± 2%
CRI Accuracy @ Ra ± 1.5%
Stray Light -25 dB max. *3
Integration Time Range 60us to 5,000 ms
Digital Resolution 16 bits


Measurement Range 1 to 150,000  lx
Sampling Rate 100k sample/sec
Frequency Range 5 to 50k Hz
Frequency Resolution 2, 4, 8, 16, 32 Hz
Accuracy 5% (5 to 30K Hz)*6
Capture Function One Shot/Continuous
Operation Mode Standalone Mode/WiFi Mode*4/USB Mode (MSC Mode*5 + PC connection)
Integration Mode Auto/Manual
Dark Calibration Auto

Measurement Mode

1. Basic Mode
2. Spectrum Mode
3. CRI Mode
4. CIE 1931 / 1976 Chromaticity Mode
5. LUX Image Distribution Mode
6. Logging Mode
7. BIN Chart Mode
8. Quality Control Checker Mode
9. Measurement Comparison Mode
10. Transmit Mode
11. TM-30-18 Mode
12. Flicker Mode
13. Frequency Mode
14. Flicker Risk Mode
15. Blue Light Hazard Mode
16. HCL Mode
17. Browser Mode
18. Option Mode

Measurement Capabilities

1. Illuminance (LUX)/Foot Candle (fc)
2. Correlated Color Temperature; CCT (K)
3. CIE Chromaticity Coordinates
 (1) CIE 1931 x,y Coordinates
 (2) CIE 1976 u’,v’ Coordinates
 (3) CIE 1931 XYZ Value
4.△x, △y , △u’ , △v’
5. Delta uv ; Duv
6.Dominant Wavelength ; Hue ; λd (nm)
7. Excitation Purity (%)
8. Scotopic and Photopic Ratio (S/P)
9.BIN ANSI C78.377 or Customized
10. Standard Deviation Color Matching (SDCM)
11. Color Rendering Index (CRI, Ra)/R1 to R15
12. Color Quality Scale (CQS)
13. Gamut Area Index (GAI)
14.TM-30-15 (Rf, Rg, Color Vector Graphic)
15. Television Lighting Consistency Index (TLCI)
16. Flicker Frequency (Hz)
17. Percent Flicker (%)
18. Flicker Index + PstLM (short-term flicker severity)
19. Stroboscopic Effect Visibility Measure (SVM)
20.Flicker Risk – IEEE PAR1789
21.PPFD (400 to 700nm) µmol/(m2*s)
(1) PFD-UV (380 to 400nm) µmol/(m2*s)
(2) PFD-B (400 to 500nm) µmol/(m2*s)
(3) PFD-G (500 to 600nm) µmol/(m2*s)
(4) PFD-R (600 to 700nm) µmol/(m2*s)
(5) PFD-FR (700 to 780nm) µmol/(m2*s)
23.Spectral Power Distribution(SPD), Unit: (mW/m2)
24.Peak Wavelength ; λp (nm)
25.Peak Wavelength Value ; λpV (mw/m2)
26.Transmittance (%)
27.Blue Light Weighted Irradiance ; EB (w/m2)
28.Blue Light Hazard Efficacy of Luminous Radiation ; KB,V (w/lm) 
29.Blue Light Hazard Risk Group(RG)
30.Blue Light Hazard Blue-ray %
31. Melanopic Lux
(1) Mel Irradiance
(2) Mel Daylight Lux
(3) Melanopic Ratio
(4) Rhodopic Lux
(5) Chloropic Lux
(6) Erythropic Lux
(7) Cyanopic Lux

System Configurations

Display 4.3″ 800X480 Resistive Touch LCD
Max. Files ≒ 21,000 Files @ 8GB SD Card (Excel + JPG)
Battery Operation Time ≦ 4 hours / Fully Charged
Power Adapter; 2500 mAh (3.7V Rechargeable Li-ion Battery)
Data Output Interface SD Card (SD2.0,SDHC/up to 32G)/Mini USB Port (USB 2.0)/WiFi SD Card compatible with iOS and Android
Data Format Compatible Excel/JPG
Dimensions 163 x 81 x 26.6 mm (H x W x D)
Weight (with Battery) 260 g ± 10 g
Operating Temperature/Humidity 0 to 35 ℃, relative humidity 70% or less without condensation
Storage Temperature/Humidity -10 to 40 ℃, relative humidity 70% or less without condensation
Display languages
English/Traditional Chinese/Simplified Chinese/Japanese/Spanish/German/French/Italian/Russian
Camera Resolution 2M pixels
Cosine Correction
*1:Input source must be a stable light source.
*2    Temperature 23±2℃ and relative humidity 50% or less.
*3:Input the 550nm monochromatic light and measure the stray light ratio at 550nm ± 40nm.
*4:It can be connected to mobile phones and tablets.
*5:MSC Mode- Mass Storage Class.
*6:The test condition is based on Lux > 300 lux of sine wave light source.
*7:Repeatability test is based on the status of the shutter opening.
The company reserves the right to change product specifications at any time without prior notice.

Additional information


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Firmware download

Contact us for the latest free firmware updates.

Best regards,
UPRtek europe

Based on 8 reviews
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  1. Healthy Developments

    The effects of artificial lighting on human (& animals) physiology are now starting to be understood. At Healthy Developments, we need to ensure our homes are fitted with lighting that has extremely low blue content as well as being flicker free. The MK350S allows checking at the click of a button the properties of various lighting. It is extremely easy to use as well as being very accurate. This was a great purchase.

  2. Jordy


    De kwaliteit van het product is erg goed & de levertijd is kort. Heel erg fijn!

  3. Jelle

    Gute qualität
    ich bin sehr zufrieden mit meinem neuen MK350S Premium Advanced Spectrometer. Die Qualität ist super! Vielen dank.

  4. James

    amazing quality
    The quality of my new purchase is amazing! Thank you for the good advices and the good service.

  5. Glenn

    Free firmware updates
    I am very happy with the free firmware updates. The service was also really good. Thank you a lot!

  6. Frank

    Top kwaliteit
    Ik ben erg blij met mijn nieuwe aankoop. Het product was erg goed verpakt en van goede kwaliteit!

  7. Steven

    Got very good advices that helped me a lot! I also got my package really fast.

  8. Jack

    very nice payment method and good advices.

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