Mark, marking plate

The Trp+ colonies obtained from tubes 2 and 3 may be too numerous to count. For this reason you must confirm the number of transformed (Trp+) cells in tubes 2 and 3 by transferring a 0.1-ml sample from each of these tubes into separate marked tubes containing 9.9 ml of sterile saline. Mix these solutions thoroughly and plate a 0.1-ml sample of the 100-fold diluted samples on separate marked plates containing minimal medium agar. Save the diluted culture samples for later use. 

Hazardous area equipment that has been tested and approved by a recognised laboratory should have a marking plate attached to its surface, in a place easily seen by the user. This plate is usually the nameplate that shows the normal information such as the name of the manufacturer, voltage, rated power, full load current, frequency, model number, serial number, ambient temperature and date of manufacture. The additional information to be shown for the hazardous area application, should be at least the following ... 

Fig. 2. Hie identilying letters and legend are the same as Fig. 1. Hie last experimental point to the lelt (P. 1- S = 0.953 cm) corresponds to all available plates in position. Hie arrows mark plate spacings below which the critical unpoisoned slab thickness is smaller with a thick water reflector than with a "reflector composed of higdily poisoned fissile solution (see Refs. 2 and 8).

Cylinder attachments (footring, headring, neckring, and marking plate)... 

Permanent attachments such as footrings, headrings, neckrings or marking plates should be inspected to make sure they are in place and firmly attached. The area of attachment to the cylinder should be checked for possible entry of moisture to the cylinder surfaces that cannot be seen. In the case of adhesive attachments, any evidence of a break in the seal is cause for removal of the attachment. The use of a dull probing tool is recommended. Attachments made of plastic also must be checked carefully for gouges or splits, which would require their removal. When the cylinder bears a removable attachment such as a removable boot (footring), the attachment must be removed for visual inspection. 

In the case of a marking plate (allowed only on certain cylinders) that is not sealed around the complete periphery, any evidence of corrosion between it and the wall requires removal of the plate and visual inspection of the cylinder wall. However, removal of the plate must be undertaken only by authorized repair facilities... 

When the cylinder bears a permanent attachment which covers a portion of the cylinder surface proper such as a footring, headring and/or neckring, or marking plate, it must receive particular attention during inspection to ascertain that it is in the same re-... 

The plate is removed from the tank, the position of the solvent front marked, and the solvent allowed to evaporate from the plate. If the components of the mixture are coloured, the separation is obvious if colourless, they must be located either by viewing under U.. or by standing the plate in a closed dry tank containing crystals of iodine, whose vapour makes brown spots show i p. 

Condition of Feed (q Fine). The q line, which marks the transition from rectifying to stripping operating lines, is determined by mass and enthalpy balances around the feed plate. These balances are detailed in distillation texts (15). 

A small perforated-plate column of conventional design was pulsed by Goldberger and Benenati [Jnd. Eng. Chem., 51, 641 (1959)] with marked improvement in mass-transfer rates. 

Figure 6,4 Small pits on a 316 stainless steel plate. A light pita, marking ghost images of deposit mounds.

These weld defects not only substantially reduced the mechanical strength of the weld, the pores also formed stress-concentrating notches. Consequently, when the door frame was inadvertently struck during the scrap charging operation, a fracture initiated at the deficient weld and propagated rapidly through the %-in. (1.9-cm) plate, as revealed by the brittle appearance of the plate fracture and the directional chevron markings. 

Change in section at weld bead. Gives stress concentration. In the case of butt welds this can be removed by grinding back the weld until flush with the parent plates. Grinding marks must be parallel to loading direction otherwise they can initiate fatigue cracks. 

The scratch marks on the circumference of these close tolerance rotary parts will correspond to. scratch marks on close tolerance stationary parts at approximately 60 around the volute from the cutwater. These marks will be vi.sible on the back plate with open impellers, or on the wear rings of pumps with enclosed impellers, or the ID bore of the restriction bushing at the bottom of the seal chamber where the shaft pa.sses through, or the ID of the seal chamber bore at the back end of the mechanical seal (Figure 9-6 and Figure 9-7, next page). 

HjO) and Bj. H2SO4.4HjO, m.p. 203-4°, [a] ° + 120° the acid sulphate, B. HjSO, occurs in yellow prismatic needles, m.p. 246-8° (corr., dec.), [a]n + 113-1° (HjO) the hydrochloride forms yellow, pentagonal plates, m.p. 286° (corr., dec.), and shows a purple fluorescence in solution in alcohol the picrate separates from alcohol in rosettes of reddish-orange needles, m.p. 194-5° (cort.). Dilute solutions of the salts are yellow and show a marked blue fluorescence. Alstonine behaves as a monoacidic base, contains one methoxyl but no methylimino group, and, unlike echitamine, does not give indole colour reactions. 

This requirement was addressed above but note that the marking has to be permanent and therefore has to be durable under the anticipated conditions of use. It would be wise to seek guidance from the customer if you are in any doubt as to where to place the marking or how to apply it. Metal identification plates stamped with the customer s identity, date of supply, contract, and limitations of use are durable and permanent. 

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