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KERN OBL-14, OBL-15 Version 1.0 01/2016 User instructions Phase contrast microscope Table of contents Before use ..................3 General notes ..........................3 Notes on the electrical system ....................3 Storage ............................4 Maintenance and cleaning ....................... 5 Nomenclature ................6 Technical data / Features ............
Suitable replacement fuses are included with the delivery. When carrying out any procedures whereby you come into contact with the electrical system of the device, such as, for example, changing the bulb or fuse, only carry out these procedures when the power is disconnected. OBL-14-15-BA-e-1610...
The best way to store accessories which consist of optical elements, such as, for example, eyepieces and objectives, is in a dry box with desiccant. OBL-14-15-BA-e-1610...
Special cleaner for optical lenses Special optical cleaning cloths Bellows Brush When handled correctly and checked regularly, the microscope should give many years of efficient service. Should repairs still be necessary, please contact your KERN dealer or our Technical Department. OBL-14-15-BA-e-1610...
4.4 Colour filter A blue colour filter is already an integral part of the microscopes of the series OBL-14 and OBL-15. It is fitted underneath the field diaphragm. In order to use suitable filters, these can simply be placed in the ring bracket of the field lens.
(see illustration on the left). To move the sample into the beam path, you must use the adjustment wheels on the right of the angle table (see illustration on the right). You can position a total of two object holders at the same time. OBL-14-15-BA-e-1610...
Important: In order to avoid damaging to the focussing system, the left and right adjustment wheels for the coarse and fine adjustment knob must never be rotated at the same time in opposite directions. OBL-14-15-BA-e-1610...
2. Then look through the left eyepiece with the left eye and use the dioptre adjustment ring to focus the image. To do this, you just need to turn the ring in both directions (see illustration), to find out where the image is at its most focussed. OBL-14-15-BA-e-1610...
If you have focussed the object to be observed for a specific magnification, then if you select the objective with the next greatest magnification, then the object will be slightly out of focus. Use the fine adjustment knob to make a slight adjustment and restore the focus. OBL-14-15-BA-e-1610...
If, as with the devices in the KERN OBL-14 and OBL-15 series, the lighting can be set in accordance with Koehler, the result is homogenous illumination of the slide and avoidance of disruptive stray light.
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7. Possibly there is the need of re-adjusting the focus and x-y axis. 8. Observe the object. If another magnification is selected afterwards, then the Koehler illumination does not have to be reset from scratch, only the aperture diaphragm and field diaphragm need to be adjusted as required. OBL-14-15-BA-e-1610...
In order to maintain hygiene, we would therefore recommend that you clean the eye cups regularly (e.g. with a damp cloth). Eye cups High Eye Point eyepiece (identified by the glasses symbol) OBL-14-15-BA-e-1610...
5.8 Using oil immersion objectives The 100x objectives of the OBL-14 and OBL-15 series are objectives which can be used with oil immersion (they are always marked with the word “OIL”). Using these generates a particularly high resolution for microscopic images.
(10x, 20x, 40x or 100x), a PH slider, which is adapted to the lens being used, a centring telescope and a green filter. The standard outfit of the models of the series OBL-14 and OBL-15 always includes a 10x and 40x phase contrast unit.
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Depending on the preferences of the user, using a green filter can produce a more effective and pleasant image. To achieve this, the green filter must be placed in the ring bracket of the field lens. OBL-14-15-BA-e-1610...
Important: When fitting the new bulb into the socket, it must only be handled with sterile gloves or using the bulb packaging film. Grease and dust residue can have a negative effect on the light quality and service life. OBL-14-15-BA-e-1610...
Dioptre setting has not been carried out correctly The field of view of one eye does not Different eyepieces are used for the match that of the other eye righthand and lefthand side The eyes are not used to using a microscope OBL-14-15-BA-e-1610...
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The stage moves down on its own The rotational resistance brake is not tight The fine adjustment knob moves on its enough When you move the table, the image The stage was not correctly fitted becomes blurred OBL-14-15-BA-e-1610...
The device may only be opened by trained service engineers who have been authorised by KERN. 11 Disposal The packaging is made of environmentally-friendly materials, which you can dispose of at your local recycling centre.