Single Multiband Wavelength Excitation for a Mercury Free Microscope

Go mercury-free. niji, the new state-of-the-art LED light source helps to eliminate mercury from microscopy.

The niji is a revolutionary innovation in mercury-free microscopy, taking advantage of recent advances in lighting technology. With a much smaller environmental impact, this low cost modular LED source with single or multiband wavelength illumination is leading the way. We care about the environment and are trying to help users who care too. The niji can help you to remove dangerous toxins and has far less power consumption than damaging mercury lamps, helping to do your bit toward the environmental impact of research. We’ve tried to use the latest technology to reduce the impact of production but also used old technology and made our packaging recyclable or degradable where possible. You may also be able to benefit from a sustainability grant from your institution to help you switch to new “green tech”. Find out more with our very approximate running cost comparison example (*costs will vary around the world, this is meant for illustrative purposes!).

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Cost Saving Chart

CostMercury lampMetal Halide LampLED light engine Niji (7 channel)
Bulbs used in niji lifetime (20,000 hours)Lifetime ~250 hours 80

Lifetime ~ 2500


Cost of bulbs used

~ £250 per bulb


~£500 per bulb £4000N/A
Energy consumed in 20,000 hours usage0.140 kWh/h 2,800 kWh0.22 kWh/h 4,400 kWh

0.04 kWh/h

800 kWh

Electricity cost in 20,000 hours usage (12.4p/kWh)£347.20£545.60£99.20
Overall disposal cost~£3.5 per bulb £280~£3.5 per bulb £28N/A
Cost over 20,000 hours£20,627.20£4573.60£99.20
Cost per hour£1.03£0.22£0.005

But, why should I choose a niji?

Benefit from the uniquely reconfigurable mainframe and the future-proof design of the niji.

niji combines a low-cost entry point with an easy and affordable upgrade path suitable for use in research institutes, hospitals, universities and pharmaceutical companies. No need to know today which wavelengths you’ll need tomorrow with our mercury-free, modular lab equipment.

Individually addressable, individually filtered LED channels

The niji delivers powerful, multi-wavelength excitation from the UV to the NIR, specifically designed for single and multiband fluorescence microscopy.

Fully compatible with microscopes and microscope software

Fully compatible with most standard microscopes, MicroManager, MicroManager 2, Metamorph and a wide range of other software packages from the major manufacturers. Contact us for more information. We also supply a universal collimator with common adapter rings for mechanical fitment.

Individual excitation filters

Each LED can be filtered at the source, allowing the user to sequence images very quickly.

Constant current and optical power LED drive modes

Both constant current and constant optical power LED drive modes are selectable, enabling fast imaging speed and high excitation power stability over long periods.

User-changeable LEDs and filters

niji’s uniquely reconfigurable mainframe allows you to change LEDs and filters easily in minutes, offering additional excitation centre wavelengths, excitation bands, and output power options.

Control individually or simultaneously

Wavelength, power, and emission channel can all be controlled using the manual controller (tablet), via software, or both at the same time. If you would like to find out more about our niji LED light source for single and multiband fluorescence microscopy, please contact us today.

niji’s individual
wavelength spectrum

Features & specs

Modular ChannelsUp to seven channels, user-fit*
SourcesSolid state LED
Wavelength Range380 – 730 nm available
Noise LevelApprox. 47 dB
Bandpass FiltersIndividual bandpass filter holders for each channel
Light InterfaceLiquid light guide with microscope collimators, available separately
ConnectionUSB-A (powered), USB-B, RS232 (serial), and TTL via 15-way connector
OperationControl via dedicated software, MicroManager, MicroManager 2, tablet, or third-party software
Programmable SetupXML upload for complete flexibility
Optical SafetyKey switch, light guide, and lid-off interlock
Power ConsumptionStandby / all light off ~5 W Single colours: green ~40 W, all other colours ~18 W All 7 colours on ~80 W
Dimensions & Weight315 x 288 x 107 mm, 4.7 kg
Warranty12  months, optional 3 years
Line Voltage110V & 240V AC
Line Frequency50/60 Hz
Power Consumption350 VA
Operating Temperature10 to 40 °C
Storage Temperature-10 to 60 °C
Humidity40% to 70% RH
niji Product Codes
BN7-MF-7-3-002niji 7-colour LED source (complete, populated unit)
BN7-MF-0-3-002niji (mainframe only)
BN7-LED-390-001niji UV 390 nm LED Module
BN7-LED-440-001niji Royal Blue 440 nm LED Module
BN7-LED-470-001niji Blue 470 nm LED Module
BN7-LED-510-001niji Cyan 510 nm LED Module
BN7-LED-550-001niji GY 550 nm LED Module
BN-LED-630-001niji Red 630 nm LED Module
BN-LED-720-001niji Far Red 720 nm LED Module
Liquid Light Guides & Collimator Product Codes
BN7-LLG-310-001Liquid light guide, 3mm diameter, 1 m long
BN7-LLG-315-001Liquid light guide, 3mm diameter, 1.5 m long
BN7-LLG-320-001Liquid light guide, 3mm diameter, 2 m long
BN7-LLG-330-001Liquid light guide, 3mm diameter, 3 m long
BN7-LLG-520-001Liquid light guide, 5mm diameter, 2 m long (custom order only)
BN7-LLG-530-001Liquid light guide, 5mm diameter, 3 m long (custom order only)
BN7-ZCOL-3-001Zoom collimator for 3mm light guide (requires microscope adapter)
Microscope Adapter Product Codes
BN7-ADT-N1-001Nikon adapter
BN7-ADT-L1-001Leica adapter
BN7-ADT-O1-002Olympus adapter
BN7-ADT-Z1-001Zeiss adapter
Other Accessories
BN7-BNC-7-001BNC breakout cable


 UVRoyal BlueBlueCyanGreen/YellowRedFar Red
Wavelength (nm)395445470505556635725
Bandwidth FWHM (nm)10181931621838
Typical Optical Power (mW)1202001859055022570
Recommended Filter SetsLED-DAPI-A-000LED-CFP-A-000LED-FITC-A-000LED-YFP-A-000




Note: Optical output powers are given for a ø3 mm liquid light guide, use of a 5 mm light guide will provide approx. 50% more power. Wavelengths and powers are approximate and may vary on LED batch. Each niji will be supplied with a full optical power and wavelength test data.

Book your evaluation unit today

To see a demo or to book your free evaluation unit, please call our team, or your nearest distributor.

Pssst, can you hear yourself thinking?

The niji is one of the quietest LED sources on the market.
With optimised fans running only when needed, you’ll be
able to hear yourself thinking.

Safety Certificates




Regulation No

WEEE Directive

Waste Electrical and Electronic Equipment Directive 2012/19/EU



Photo-biological Safety of Lamps and Lamp Systems

Regulation No BS EN 62471



Low Voltage Directive



Regulation Registration, Evaluation, Authorisation & restriction of Chemicals

UL-certified Power Adapter

UL-certified AC power adapter

Let’s Work Together

If you are not sure where to get the niji from, or you are a distributor who is interested in adding the niji to your portfolio, let us hear from you. Just send us an email or give us a call.

Contact our team

Send an email to

Or give us a ring +44 (0) 808 501 5490