Category: Science - Chemistry/Biochemistry
PHYSICAL EXAMINATION 4 TEMPERATURE 4 TURBIDITY 4 TURBIDITY STANDARD 4 PLATINUM WIRE METHOD 5 TURBIDIMETRIC METHOD 7 COEFFICIENT OF FINENESS 8 COLOR 9 COMPARISON WITH PLATINUM-COBALT STANDARDS 9 COMPARISON WITH GLASS DISKS 10 COMPARISON WITH NESSLER STANDARDS 10 LOVIBOND TINTOM...
PHYSICAL EXAMINATION 4 TEMPERATURE 4 TURBIDITY 4 TURBIDITY STANDARD 4 PLATINUM WIRE METHOD 5 TURBIDIMETRIC METHOD 7 COEFFICIENT OF FINENESS 8 COLOR 9 COMPARISON WITH PLATINUM-CO...
2. Part 2───────────────────────────────────┬─────────────────────────────────── Turbidity │ Vanishing depth of wire (mm.). (parts per million). │ │ ───────────────────────────────────┼─...
3. Part 3Nitrogenous organic matter passes through several intermediate compounds during its natural decomposition, and that which does not gasify ultimately forms nitrate. Nitrogen in o...
4. Part 4_Procedure._—To 100 cc. of the sample in a 300 cc. casserole add 2 cc. of the hydroxide solution and concentrate by boiling to about 20 cc. Pour the contents of the casserole in...
5. Part 5_Procedure._—Measure 200 cc. of the sample and 200 cc. of distilled water into 500 cc. Jena or similar glass Erlenmeyer flasks. Treat the contents of each flask in the following...
6. Part 6_First procedure._—Prepare standards containing amounts of standard iron solution ranging from 0.05 to 4 cc. according to the quantity of iron in the sample. Dilute these amount...
7. Part 7─────────────────────────────────────────────────────────────────────── 13. Follow scheme for all three metals as given in Table 10 through section 5. Nearly neutralize the filt...
8. Part 8_Collection of sample._—Collect the sample in a narrow-necked glass-stoppered bottle of 250 to 270 cc. capacity. The following procedure should be followed in order to avoid ent...
9. Part 9_First procedure._—Weigh accurately 0.5 gram of dried sludge or 5.0 grams of dried mud and put it into a 500 cc. Kjeldahl flask. Digest it with 20 cc. of sulfuric acid, or more...
10. Part 10——, and ELLMS, J. W. On odors and tastes of surface waters, with special reference to anabaena, a microscopical organism found in certain water supplies of Massachusetts: _Tech....
11. Part 11All reactions shall be expressed with reference to the phenolphthalein neutral point and shall be stated in percentages of normal acid or alkali solutions required to neutralize...
12. Part 12────────────────────────────────────────────────────────────┬───────── Steps in procedure. │ Further │procedure │required. ──────────────────────────────────────────────────────...
13. Part 131. Silently corrected typographical errors and variations in spelling. 2. Archaic, non-standard, and uncertain spellings retained as printed. 3. The Chemical Bibliography was re...