Microscopes from Brunel UK Ltd

Brunel Microscopes Ltd

Registered in U.K. (England) No: 2060047

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A full specification polarising microscope

Brunel SP250P Microscope

Polarisation and Ore

Budget Polarising microscopes SP75 Polarising Ore microscope SP300XP SP350P Polarising

Brunel SP250P swing out polariser

Brunel SP250P analyser area

The Brunel SP250P binocular is a full specification polarising microscope including Bertrand lens, quartz wedge and wavelength retardation plates. This microscope is very competitively priced and manufactured exclusively for Brunel Microscopes to the highest standards. The binocular head incorporates a lyot depolarising filter to ensure true colour rendition when analysing with plane polarised light.

The Brunel SP250P Binocular specification features a rotating binocular head with x10 widefield eyepieces one of which has a graduated crosshair, a push/pull Bertrand lens beneath the binocular head, and a push/pull analysing filter that can be rotated through a full 360 degrees with a graduated scale. It also has a filter slot to accommodate the quartz wedge, quarter wavelength and full wave length retardation plates that are all provided as standard with this microscope, a rotating graduated circular stage, with clamping mechanism and lateral adjustment which allows each objective to be positioned centrally in the optical path, and a quadruple objective turret, with an excellent and very positive indexing mechanism, housing 160mm corrected plan x4, x10, x20 and x40 strain free polarising objectives, that have lateral adjusters in three of the objective positions to allow individual lateral centring. There is an abbe condenser, with rack and pinion focusing, filter carrier and iris diaphragm.

The polarising filter is housed above the field lens with a swing out mechanism so that it can be removed easily from the optical path.

One of the most important features of any polarising microscope is the illumination system. Crossed polarising filters obviously  produces a black background, and the brilliance of  the appearance of birefringent objects is dictated by the lighting system of the microscope.  The Brunel SP250P binocular has rheostat controlled quartz halogen illumination, with 6 volt 20 watt lamps located in an easy to reach lamp housing that can easily be accessed from the base of the microscope.

The build quality of this microscope is excellent for the price. It has a modern design with stylish wrist resting inserts on the base. The low position coaxial coarse and fine focus controls are well placed for ease of comfort, and have an inbuilt safety stop and tension adjustment. The fine focus is graduated to facilitate simple depth measurement. The SP250P is available in both binocular and trinocular format.

Price SP250P Binocular - £1472.50 + vat

Price SP250P Trinocular - £1572.50 + vat

Brunel SP60P

Brunel SP75P

Brunel SP1500XP

Brunel SP300P

Brunel SP350P

x10 micrometer eyepiece                   SP250P-01


CCTV adapter                                    SP250P-06


x20 eyepieces (pair)                           SP250P-02


Spare bulb                                        SP250P-07


Universal SLR camera adapter           SP250P-03


Stage micrometer                              SP250P-08


T2 ring  (state camera make)              SP250P-04


x60 plan objective                              SP250P-09


Dispersion x10 objective                     SP250P-05


Wooden carrying case                       SP250P-10


Brunel SP250P Polarising Microscope Accessories

The Brunel SP250P series has a range of accessories available from our online shop.

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Brunel SP250P Polarising Microscope

Brunel SP250P turret and stage area

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