منابع مشابه
Dual-pipet techniques for probing ionic reactions
Novel dual-pipet electrodes prepared by pulling borosilicate theta-tubing are described. Three types of electrochemical experiments employing such devices include the following: (1) generation/collection experiments in which ions are ejected from one of two micropipets ("generator") into the external solution and collected at the second pipet ("collector"), (2) measurements of ohmic current-vol...
متن کاملNecessity of prerinsing disposable polypropylene pipet tips.
Piston-actuated microliter pipeta are frequently used to sample and dispense known volumes. These pipets maintain high accuracy and precision when used for rapid serial applications and are ideally suited for radiochemical experiments, because test solutions come in contact only with the disposable polypropylene tips. Their accuracy is affected by temperature differences between the pipet and t...
متن کاملA simple, effective pipet washer for the clinical chemistry laboratory.
P IPET WASHING has always been a major problem in. a clinical chemistry laboratory. When blood and other body fluids are pipetted the inside of the pipets tends to retain a coating of lipids which is often difficult to remove. On the other hand, the specimens are usually small and utmost accuracy is desired. A pipet which does not drain properly and retains drops of the solution on the inside o...
متن کاملSemiautomatic pipetting device (the governor pipet) for clinical chemistry procedures.
USTED et al. reported recently on the use of an electronic fibrin switch for the determination of prothrombin time (1). We have made similar observations and drawn the same conclusions, using this instrument (Fibrometer*). It occurred to us that the semiautomatic pipet employed for the measurement of plasma as well as reagents in the determination of prothrombin time might easily be adapted to ...
متن کاملA "wash-out pipet system" for sampling red blood cells.
For studying plasma and red blood cell (RBc) electrolytes, we have developed a method that allows frequent accurate and reproducible sampling of both plasma and RBC. We determined that for our purposes, a 1.0-nil volume of sample was optimum. Although the 1.0-nil “Class A” Ostwald-Folin blow-out pipet and the standard “Class A” transfer pipet were adequate for sampling plasma, they were not ade...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1974
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed051p694.2