Titlebook: Micromethods in Molecular Biology; Volker Neuhoff Book 1973 Springer-Verlag Berlin Heidelberg 1973 DNA.RNA.amino acid.biology.electron mic

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The Construction and Use of Quartz Fiber Fish Pole Balances,otect it from air currents and static charges. Its displacement with microgram or smaller loads is measured by an eyepiece micrometer in a horizontally mounted binocular microscope which is also used for loading and unloading the balance. The precision is approximately 1.0–2.0%; it has a relatively

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Micro-Dialysis,al (Polyoxymethylene) which are suitable for the dialysis of 100 μl or 15 μl respectively. A 4 mm, or 2 mm, thick disc (external diameter ca. 20 mm) with a central hole which may measure between 1 mm and 6 mm according to the volumes to be dialysed (15, 30, 50, 100, 250, 500 μl) is first fitted on o

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Micro-Homogenisation,isolated cells or very small core cylinders or biopsy samples, homogenisation by repeated freezing and thawing is frequently employed. Since this is often insufficient for the complete disintegration of the tissues, micro homogenisers must be used. E. (1966) has devised the micro-homogeniser shown i

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Wet Weight Determination in the Lower Milligram Range,rmination, a number of sensitive methods (quartz fibre balance [see chapter 8], electron microscopy [see chapter 7], interferometry etc.) exist. For fresh weight determinations it is essential to avoid the loss of water when the sample is being transferred to the balance. Using the procedure describ