Kern OZM 933 stereo microscope set, trinocular, double arm with base plate, zoom 0.7x to 4.5x, LED ring light

The Kern OZM 933 combines a trinocular zoom head with a ball-bearing double arm and a base plate. The third tube output takes a camera, so findings can be saved as images. The set also includes a holder, a 4.5 W LED ring light and a dust cover.

Stereo microscope set with camera output

The head is trinocular, inclined at 45° and rotates through 360°. The data sheet specifies the beam splitter ratio as 0:100. A C-Mount adapter is required for a camera; this is not included in the scope of delivery. According to Kern, suitable adapters include those with 0.3x, 0.5x and 1x magnification, as well as the ODC 825, 832, 852 and 854 microscope cameras. According to Kern, the ODC 241 tablet camera is not compatible with the OZM-9 series.

Optics: Zoom 0.7x to 4.5x

The Greenough system offers a continuously variable zoom range from 0.7x to 4.5x (6.4:1). With HSWF-10x eyepieces, this results in a magnification range of 7x to 45x. The working distance is 110 mm; objects may be up to 130 mm high. Interpupillary distance 52 to 76 mm; dioptre adjustment on both sides from minus 6 to plus 6.

Double arm, ring light and weight

The ball-bearing double arm sits on a base plate. The mounting diameter on the universal stand is 37 mm; the head mount is 76 mm. The set weighs approx. 28 kg net and approx. 32 kg gross. The ring light operates in incident light, is dimmable and has a power rating of 4.5 W. The power supply is built-in. The OZM 932 is the same set but with a binocular head. Anyone who wants incident and transmitted light should look at the trinocular OZL 466.

An overview of the sets

The OZM 933 is the trinocular set with double arm and base plate. The OZM 932 is the same set with a binocular head. The OZM 952 is available without a camera output and with a clamp, whilst the OZM 953 and OZM 983 come with a camera output and clamp. The OZM 913 features a telescopic arm with a base plate.

Typical applications

Kern lists the following main areas of application for the OZM 9 series:

• In vitro fertilisation
• Detection of parasites
• Zoology and botany
• Tissue preparation and dissection
• Quality control
• LCD/LED electronics and semiconductor technology
• Assembly and repair

In the detection of parasites or in dissection during practical courses, a find is photographed before the specimen is altered. In quality control, the photo goes to the inspection report.

Regulatory information

As an electrical device, the microscope falls under the ElektroG. The manufacturer Kern & Sohn GmbH is registered under the WEEE registration number DE 80821200. How to return old appliances is described on the page Environment and disposal.

Frequently asked questions

Can I continue to look through the eyepiece whilst taking a photograph? Yes, the head is trinocular; the camera is fitted to the third output.

Which cameras are intended according to Kern? Microscope cameras such as the ODC 825, 832, 852 and 854 with a C-Mount adapter. The ODC 241 tablet camera is not compatible with the OZM-9 series.

How is the head attached? The head mount has a diameter of 76 mm; the mounting diameter on the universal stand is 37 mm.

How long is the warranty? According to Kern & Sohn, this device comes with a 3-year warranty. Kern grants 3 years on products with a list price of €500 or more and 2 years on products below that and on components; wear parts such as batteries and rechargeable batteries are excluded. Warranty repairs are carried out by Kern or by a Kern dealer.

Technical details

Scope of delivery

• Stereo microscope head (trinocular)
• Universal stand (ball-bearing double arm with base plate)
• Holder
• 4.5 W LED ring light
• Dust cover

Not included are the camera, C-Mount adapter, attachment lenses and additional eyepieces.

Individual requirements and procurement service

According to Kern, microscope camera adapters, cameras, eyepieces with a scale, attachment lenses, a solder protection lens and alternative stands are available for the OZM 933. We can source accessories and spare parts on request via our procurement service.