This is a Spex model 1870B Spectrometer for parts only.
Overall condition of the instrument is very good. Serial number is 3651..

This unit is missing the grating and the deflection mirror assembly for the input slit.

It features a focal length of 0.5 meters and fully adjustable input and output slits.
The input slit is a type 1451N and includes an additional slider to adjust the slit height in steps.
The output slit is a type 1451X mounted on a type 1871 adapter plate.
Both collimation mirrors are present and in superb condition (no haze, scratches, or marks)
Both slits function properly.

BMI Surplus, Inc. has a huge inventory of used, new, pre-owned and recycled Monochromators and Spectrometers for sale.
We will work with you individually to find the perfect set up for your application.



We have 32 years of experience shipping sensitive scientific instruments & industrial equipment!!


Shipping Policies