Magnetic heater

TD-NMR and HR-NMR spectrometer systems have a majority of components in common. All spectrometers consist of a magnet, magnet temperature sensors, magnet heater power supply, RF frequency synthesizer, pulse programmer, transmitter/amplifier, sample probe, duplexor, preamplifier, receiver, and ADC, all controlled by a computer. In addition to these items a HR-NMR has several other requirements which include an electromagnetic shim set, a shim power supply, and a second RF locking channel tuned to the resonance frequency of Li. The second RF channel is identical to that of the observed H channel. Figures 10.9 and 10.10 show the basic setup of TD-NMR and HR-NMR spectrometers, respectively. 

Magnetic heater/stirrer plate, stirring bar and silicone oil bath... 

Nanofiltration experiments were carried out in a stainless steel stirred cell with an Amicon magnetic stirrer on a magnetic heater plate (Industrial Equipment Control, Australia). The calibration is shown in Figure 4.2. 

Cuprite CuO Black non-magnetic mineral. Originates from condensers and FW heaters. 

Ti-Beta catalyst was synthesized according to reference [8], Thiophene and model compound oxidation were carried out at 8O0C in a block heater with magnetic stirring (500 rpm) in multiple high pressure tubes. Individual samples were prepared of 0.1 mol 30 % H202 solution, 0.02 mol thiophene, 25 g heptane and 100 mg Ti-Beta catalyst were added at room temperature,, and heated to 80°C. The same oxidation conditions were also investigated without heptane solvent. The reaction was stopped at different... 

Low pressure hydrogenator equipped with a 500 mL glass autoclave, a heater, and a magnetic stirrer... 

Horizontal belt pressure filters, 11 379 Horizontal belt vacuum filter, 11 354-355 Horizontal box heaters, 19 511 Horizontal current classifiers, 16 619 Horizontal Feret s Diameter (HFD), 16 147 Horizontal injection wells, 16 613 Horizontal leaf filters, 11 366-367 Horizontal magnetic field-type (HMC), 23 857... 

Fig.6 shows the experimental apparatus in which seven batch-wise R.O. cells were installed. Effective area of membranes was 19 cm. Compressed nitrogen gas was used to pressurize the R.O. cells at 1.0 MPa. About 750 cm of the feed solution was kept well stirred by means of a magnetic stirrer fitted in the cell about 0.5 cm above the membrane surface to avoid the effect of concentration polarization. Temperature inside the constant temperature chamber was controlled within + 1°C at a fixed point using a fun and two heaters of 500W. 

Fig. 3.27. The Pask-Plesch reaction calorimeter, approximately to scale. A phials of reagents, B phial magazine, C cold finger (not essential), D phial breaker, E vessel of calorimeter, F heater, Gj Pt wires of the conductivity probe, Gj terminals, H vacuum jacket, thermometer probe, terminals from thermometer probe and the compensating leads, K tap for evacuation of pseudo-Dewar space or admitting air, M magnetic pusher, T main tube,...

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