The analysis of whole blood preparations is obtaining considerable popularity as a diagnostic tool in a wide range of medical specialties. Dark ground and phase contrast techniques are particularly useful. However blood cells are poor reflectors of light and have little by way of internal structure and therefore require very effective microscopy to obtain the the images that are needed.
There are many units on the market that purport to offer the solution, and some are more effective than others. In essence the effective system requires two essential elements. Firstly an effective illumination system and secondly good quality optics. The correct balance between these two factors is essential to obtain the results required at an affordable price.
Illumination:
This is particularly important for dark ground analysis, which requires maximum illumination to overcome the fact that red blood cells are poor reflectors of light. A minimum of 50 watts is required for the light source, this is more than adequate providing the x100 objective is of good quality. Some units attempt to overcome poorer quality objectives by introducing excessive light by using fibre optic illumination introduced into the condenser of the microscope. This usually causes flare (which produces images that are unreal) and also an uneven field illumination, and generally tries to mask the fact that the x100 objective is just not of sufficient quality for the purpose.
Objectives:
The objectives of any microscope system are the essential components necessary to achieve the results required. Failure to address this fact by attempting to overcompensate with unnecessary over illumination is a significant criticism of some units. For dark ground analysis, both units which Brunel Microscopes recommend incorporate high quality plan x100 objectives with an internal iris diaphragm. For phase contrast examination only the best will do. Both systems offered have excellent phase contrast systems that deliver the results required.
Other Factors:
Attention to detail is all important, and the types of slides, coverslips and even immersion oil can have a significant effect. Brunel Microscopes supply, with both its recommended systems, the best quality slides and coverslips of the correct thickness and our own formulated immersion oil.
Both systems offered by Brunel Microscopes address all these issues and provide the optical results required at a very competitive price.
Image Capture:
We also specialise in providing CCTV, 35mm and digital cameras suited for microscopy together with all that is needed to capture images on monitors, TV’s, computers and video recorders - and most importantly we offer free post sales support to our customers to help them through any teething troubles that they may have in getting used to the equipment and as they develop their expertise with the system.