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Obtained from Matheson Coleman and Bell, 2909 Highland Avenue, Norwood, Ohio 45212, as EM Laboratories Catalog No. Shake the samples for exactly 2 hours. It is the potassium salt of fatty acid. Enzyme concentration, incubation pH and temperature, and stirring conditions are the same. An aliquot (0.5 ml) of PAA/AMG solution (0.4 KU PAA plus 0.17 KU AMG) was added to each tube, and the tubes were capped tightly and attached horizontally, aligned in the direction of motion (Figure 1) in a shaking water bath set at 37°C (Note: If an (NH4)2SO4 suspension of this enzyme preparation [PAA, 2 KU/ml; AMG, 0.83 KU/ml in 50% w/v ammonium sulfate] was used, the sample was suspended in 3.8 ml of sodium maleate buffer and 0.2 ml of enzyme suspension was added.). . 7.2.5 Eluent, 0.003 M NaHCO3/0.0024 M Na2CO3. The lidar receiver shall not be aimed within an angle of ±15° (cone angle) of the sun. 5.7 Laser Institute of America Laser Safety Manual, 4th Edition. Skeletal formula. Wait for at least two times the system response time before measuring the spiked sample concentration. The requirements of section 3.3.2 must be fulfilled for each of the three runs and the results should be recorded. The limiting aperture is the point in the path between the photocell and the smoke plume where the angle of view is most restricted. If the operator does not obtain a clear indication of the location of the detached plume, this method shall not be used to make opacity measurements between the outlet and the detached plume. Outline NAME vector icon for web design isolated on white background, Hygroscopic icon. Glucose standards (in quadruplicate) were prepared by mixing 0.1 ml of glucose solution (1 mg/ml) with 0.1 ml of 200 mM sodium acetate buffer (pH 4.5) and 3.0 ml of GOPOD reagent and incubating at 50°C for 20 min. Thoroughly mix the solution in the container holding the contents of the second and third impingers. Note that if the effluent gas stream can be considered dry, the volume of water vapor and moisture content need not be calculated. Each momentary observation recorded shall be deemed to represent the average opacity of emissions for a 15-second period. Mix the sample, and mark the solution level. In all cases where thermostable α‐amylase was employed, the highest starch values were obtained. (1) Next, introduce the low-level gas in system calibration mode and record the time required for the concentration response to decrease to a value that is within 5.0 percent or 0.5 ppm (whichever is less restrictive) of the certified low-range gas concentration. The resistant starch procedure developed is an update of current procedures and incorporates incubation conditions with pancreatic α‐amylase (PAA) and amyloglucosidase (AMG) that parallel those used AOAC Method 2017.16 for total dietary fiber.

If one cell is used to analyze multiple samples, rinse the cell with deionized distilled water several times between samples. In Table 4, the starch values obtained for the RS fraction of Fibersym® using either the Shukri et al. Leak-free diaphragm type, or equivalent, to transport gas. A sample of the homogenized material (approximately 2 g, weighed accurately) was transferred to an ANKOM® filter bag, and the bags were sealed. Short-term stops of the lidar to record additional reference signals do not constitute the end of a data run if plume signals are resumed within 90 seconds after the reference signals have been recorded, and the total stop or interrupt time does not exceed 3 minutes. Pour the contents of the impingers into a 1-liter polyethylene bottle using a funnel and a stirring rod (or other means) to prevent spillage. This modification minimizes the possibility of aspirating sample solution during filtration. Aiming adjustments shall be made to the lidar's line-of-sight within the plume to correct for changes in the location of the most dense region of the plume due to changes in wind direction and speed or if the detached steam plume moves closer to the source outlet encroaching on the most dense region of the plume.

Same as in Method 7C, section 12.1. (2) For white plumes (170 sets at a smoke generator, 168 sets at a coal-fired power plant, 298 sets at a sulfuric acid plant), 99 percent of the sets were read with a positive error of less than 7.5 percent opacity; 95 percent were read with a positive error of less than 5 percent opacity.

You must follow the procedures of section 8.2.7 of Method 7E. The solutions were neutralized by addition of 8 ml of sodium acetate buffer (1.2 M, pH 3.8), 0.1 ml of AMG (330 U) was added, and the tubes were incubated at 50°C for 30 min. This analysis assumes that for a given lidar measurement, the range from the lidar to the plume, the elevation angle of the lidar from the horizontal plane, and the azimuth angle of the lidar from an arbitrary fixed reference in the horizontal plane can all be obtained directly.

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