All Viso systems are delivered pre-calibrated but it is possible to make a custom calibration of the spectrophotometer if desired. Viso recommends calibration every year (minimum every two years). Having your own calibration light source is even more interesting if your Viso system is to be certified by an official agency, which will perform its own calibration and afterwards issue certification documents.

All CALI-T50 light sources are traceable to Viso’s calibration lamp (a New Port irradiance lamp with serial SN7-2011 with reference to NIST lamp F-602).

The CALI-T50 includes soft start electronics that expands the life time of the light source. Further, the suitcase contains a dedicated and precise power supply to the light sources to assertain optimal calibration conditions.

Smooth spectrum – no need to calibrate.
‘Bumpy’ spectrum – need to calibrate.

Often, a ‘bumpy’ spectral intensity distribution indicates the need for calibration. You have the option of shipping your sensor to Viso Systems for calibration (expect 1-2 weeks down-time) or making your own calibrations.

With your own reference lamp you will be able to make your own regular calibrations. 

The CALI -T50 reference light source is part of a standard LabSpion product delivery and can be added to both BaseSpion and LightSpion if desired.


Make your own calibrations

Calibrate as often as you like at no cost

CALI-T50 is specialized to work with Viso hardware and software

Re-calibrate in 8 easy steps

No down-time in your laboratory


Get more information


Lamp type 
50 W Tungsten Halogen

Lamp file
The lamp file specifies the CALI-T50 in uW/cm2/nm at 0.5 m for each wavelength

Small suitcase including
all connectors, cords etc.

Standard Viso 8-step calibration procedure

Other Viso Accesories

Add a LabTemp 3-port temperature probe system for monitoring ambient lab temperature and 3 temperature spots

Easy positioning of your LabSpion sensor. Replace your tripod with a rail-mount for your sensor including distance detector s

The LabFlicker instrument records all contemporary flicker metrics including PstLM and connects to all Viso systems

The extender of the LightSpion allows you to measure lamps that are up to 22 cm in diameter by extending the sensor distance

Upgrade your existing sensor to provide a broader measurement range (eg. UV-VIS) or higher accuracy