Fill time cleaning

Water-filled motors These arc initially filled with clean water. Distilled water was originally used as an initial filler, but with the passage of time, clean w atcr was found to be a better substitute and now only clean water is used as an initial filler. 

The containers and closures are cleaned and sterilized using SOPs. The filling machine is operated at the predetermined fill rate for the container size utilized, as well as at the fastest speed (handling difficulty) and the slowest speed (maximizing). The containers are sealed and the medium-filled units are collected in sequentially numbered trays or boxes (notified to the filling time). 

A single spectrum, with associated baseline, will require -1 hr, including the time needed to fill and clean the cuvette. Up to an additional hour may be needed for optimizing instrument parameters if the sample is unfamiliar. For a number of samples, economies of time can be effected (see Basic Protocol). 

Note During this time, clean the reaction bulb E in prep for the test of the sample. For this, lower the bulb F, fill the cup a with coned and open the 2-way cock... 

Circulation. The vessel is filled with cleaning solution and allowed to stand for a short time, after which the solution is either agitated to increase internal circulation, or circulated through an auxiliary system (called a clean-in-place system, as discussed later). FVesh makeup solution can be pumped in if used solution is withdrawn. In boilers, nitrogen can provide agitation for more-effective scale removal. 

Outdoor barbecue grill. Fill a clean, shallow pan with soil. Set the pan over the fire of an outdoor barbecue grill. Insert a meat thermometer into the soil. When the thermometer registers 140°F, begin timing, and keep the soil over the heat for 30 more minutes. It the soil temperature threatens to exceed 180°F, add a small amount of cool water to the soil to moderate the temperature. 

D16. A column packed with gas-phase activated carbon is initially filled with clean air. At t = 0 a feed gas containing y = 0.0005 wt frac toluene in air is started. This feed continues until t = 10.0 hours at which time a feed that is y = 0.0015 wt frac toluene is introduced and continued throughout the remainder of the operation. The superficial velocity is always 15.0 cm/s. Find the minimum column length required to have a single shock wave exit the column. 

Because the RIM materials enter the mould as low viscosity liquids, they accurately reproduce the mould surface. This characteristic is an advantage when a stained or textured surface is desired for aesthetic reasons. Secondly, both mould halves must be closely fitted to avoid excess leakage and fiash of the low-viscosity liquid mixture. This close-fit requirement must be balanced with the need to dispel all the air in the mould within the 5 s or less fill time. Some provisions for the release of mould air must be made. Also mould release must be applied to the mould surface to effect release of the parts, and mould cleaning is required to control flash removal and polymer build-up. 

In a conventional laboratory, Adeloju and Bond [42] observed considerable variations when periodically measuring voltammetrically standard solutions of cobalt, nickel, copper, zinc, selenium, and lead owing to the variability of airborne contamination. They stress that the adoption of a blank substraction approach is no more than a futile exercise because of the variability of the analytical blank levels with time. Boutron [43] assessed the effect of air purity on the analysis of a standard solution containing 10 ng/mL of iron. When samples were prepared in an ordinary laboratory environment, values of 20.6 ng/mL were observed Finally, Gretzinger et al. [44] filled carefully cleaned quartz beakers (cross-section, 16 cm volume 20 mL) with 10 mL of 1 M HCl, prepared by subboiling (or nonebullient) distillation [45], deposited them uncovered in an ordinary laboratory on different days, and measured the iron level in the HCl solution. The weather was found to play an important role as a rule, when it is raining the air is essentially more pure than when it is dry. On one dry day, the amount of iron in the 10 mL of 1 M HCl over a periode of 6 hr was up approximately 20 ng, on another up to more than 30 ng. 

The cracked products leave as overhead materials, and coke deposits form on the inner surface of the dmm. To provide continuous operation, two dmms are used while one dmm is on-stream, the one off-stream is being cleaned, steamed, water-cooled, and decoked in the same time interval. The temperature in the coke dmm is in the range of 415—450°C with pressures in the range of 103—621 kPa (15—90 psi). Overhead products go to the fractionator, where naphtha and heating oil fractions are recovered. The nonvolatile material is combined with preheated fresh feed and returned to the furnace. The coke dmm is usually on stream for about 24 hours before becoming filled with porous coke, after which the coke is removed hydraulically. 

Time must be included for emptying, cleaning, and filling the batch reactor (=30 min). 

Procedure. Weigh out accurately from a weighing bottle about 0.2 g of the pure sodium carbonate into a 250 mL conical flask (Note 1), dissolve it in 50-75 mL of water, and add 2 drops of methyl orange indicator (Note 2) or preferably of methyl orange-indigo carmine indicator (Section 10.9), which gives a very much more satisfactory end point (Note 3). Rinse a clean burette three times with 5 mL portions of the acid fill the burette to a point 2-3 cm above the zero mark and open the stopcock momentarily, in order to fill the jet with liquid. Examine the jet to see that no air bubbles are enclosed. If there are, more liquid must be run out until the jet is completely filled. Re-fill, if necessary, to bring the level above the zero mark then slowly run out the liquid until the level is between the 0.0 and 0.5 mL marks. Read the position of the meniscus to 0.01 mL (Section 3.12). 

True. Batch cultures give lower overall outputs than continuous cultures, as they suffer from non-productive down-time (the time taken to empty, clean, re-sterilise and re-fill the fermentor). After inoculation, considerable time can be taken for biomass to build up to a level where substrates are effectively utilised. Continuous cultures do not suffer such drawbacks once they are in operation. 

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