Clamping magnetic

Based on the experience gained with the laboratory set-up, a prototype instrument was then built, the Shell "Blushmeter" (Fig. U). A 2 mW He-Ne laser is used and the optical arrangement is essentially the same as described above, with <() and 0 fixed at 70 and 60°, respectively. Flat test panels are clamped magnetically onto a horizontal sample table which can be displaced (at 0.2 cm/s) in the X and Y directions by means of two electric stepping motors. Digital read-out of the actual position permits accurate and reproducible scanning of the entire panel surface. 

Inductive stroke pick-up (7) with clamp magnet coupling (8). 

Teflon stir bar 1 heavy duty balloon 1 roll of electrical tape Magnetic stirrer Support stand and clamps Ohaus triple beam scale 1 plastic funnel... 

The above reagents (ok the safrole and H2O aren t reagent) are weighed or measured accordingly. The flask is securely clamped into place on the magnetic stirrer. Add the DMF and H2O. Start stirring, and then slowly add the palladium chloride and cuprous chloride. If you add the powders first then the liquids you ll have problems with the stir bar finding a place to spin. 

A 600-ml., tail-form beaker is equipped with a thermometer, a magnetic stirring bar, and two electrodes. A 45-mesh cylindrical platinum anode (Note 1) is used. Surrounding the anode is a cylindrical nickel cathode (Note 2). The electrodes are held in place (distance between anode and cathode 0.75 cm.) and suspended in the beaker by means of a clamp formed from Delrin rods (Note 3). The electrodes are connected to an adjustable d.o. power supply (Notes 4, 5). 

An example of a serial-recording EEL spectrometer is shown in Eig. 2.33 it features a magnetic prism system which was constructed for a TEM/STEM of the type JEOL JEM lOOS [2.199, 2.200]. Its second-order aberrations are corrected by curved pole-piece boundaries, an additional field clamp, and two extra hexapoles acting as stig-mators. The electron beam can be adjusted relative to the optical axis by use of several deflection coils. A magnetic round lens is positioned just in front of the prism to... 

FIGURE L.2 The apparatus typically used for a titration magnetic stirrer flask containing the analyte clamp buret containing the titrant—in this case, potassium hydroxide. 

C. 3-Chloro-2-(chloromethyl)-1-propene. Tris(chloromethyl)acetic acid (205 g, 1.00 mol) is transferred to a 500-mL, two-necked, round-bottomed flask. On top of the powdery acid, which nearly fills the flask, is placed a football magnetic stir bar (1.25 x 0.5 in.). The neck of the flask to be clamped is wrapped well with aluminum foil and is fitted with a glass stopper. A standard taper 24/40 short path still head, to which is attached a Drierite drying tube, is attached at the second neck. The upper flask and short path column are wrapped with aluminum foil, and the flask is immersed in a high temperature oil bath (Note 14) that has been preheated to a stable 210°C. As the solid melts, the reaction mixture becomes yellow, and the oil bath temperature drops (IQ-... 

While in the liquid nitrogen bath, the sample (held by the magnetic wand) is manoeuvred into a cryovial, which is held submerged in the liquid with a vial clamp. 

Magnetoelastic stress isotherms cra and crb of the H040/LU 15)50 superlattice, clamped along the a and b axes of the hep structure, respectively, and with the applied magnetic field along the easy b axis are presented in fig. 59 (Del Moral et al. 1998). The sudden... 

Fig. 57. Magnetoelastic stress isotherms for a (Ho6/Y6)ioo supertattice ora and

Magnetic stir plate 50-ml buret Buret clamp Clamp support Stopcock Small glass funnel... 

---