Air, Water, and Food from a Sanitary StandpointJ. Wiley & sons, 1909 - 278 sider |
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Side 18
... inch of air may carry 2000 dust - particles in the open country , 3,000,000 and more in cities , and 30,000,000 in inhabited rooms . Among these millions there may be found from ten to several hundred micro - organisms , moulds , and ...
... inch of air may carry 2000 dust - particles in the open country , 3,000,000 and more in cities , and 30,000,000 in inhabited rooms . Among these millions there may be found from ten to several hundred micro - organisms , moulds , and ...
Side 28
... inch blacksmith's bellows , fitted with valves so arranged as to draw the air out of the bottle . The bellows is connected with a three - quarter - inch brass 184 . * Pettenkofer : Annalen , 2 , Supp . Band ( 1862 ) , p . 1. Gill ...
... inch blacksmith's bellows , fitted with valves so arranged as to draw the air out of the bottle . The bellows is connected with a three - quarter - inch brass 184 . * Pettenkofer : Annalen , 2 , Supp . Band ( 1862 ) , p . 1. Gill ...
Side 37
... inches and are provided with stop- FIG . 3 . cocks at slightly different levels so as to permit of convenient manipulation . There is permanently attached to the upper end of the longer tube a piece of rubber tubing 1 inch in length ...
... inches and are provided with stop- FIG . 3 . cocks at slightly different levels so as to permit of convenient manipulation . There is permanently attached to the upper end of the longer tube a piece of rubber tubing 1 inch in length ...
Side 38
... inch of the asbestos layer and provided above the stopper with a stop - cock . Connection is made with the short tube of the inverted bottle by means of a rubber tube about 8 inches in length . Procedure . ( a ) The Absorption ...
... inch of the asbestos layer and provided above the stopper with a stop - cock . Connection is made with the short tube of the inverted bottle by means of a rubber tube about 8 inches in length . Procedure . ( a ) The Absorption ...
Side 40
... inch porcelain dish and run in barium hydroxide to the produc- tion of a distinct pink color . Return the solution to the filter - bottle and pour it again into the dish . One or two drops of the alkali solution will suffice to finish ...
... inch porcelain dish and run in barium hydroxide to the produc- tion of a distinct pink color . Return the solution to the filter - bottle and pour it again into the dish . One or two drops of the alkali solution will suffice to finish ...
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Air, Water, and Food from a Sanitary Standpoint Ellen Henrietta Richards,Alpheus Grant Woodman Uten tilgangsbegrensning - 1909 |
Air, Water and Food from a Sanitary Standpoint Ellen Henrietta Richards,Alpheus Grant Woodman Uten tilgangsbegrensning - 1911 |
Air, Water, and Food from a Sanitary Standpoint Ellen Henrietta Richards,Alpheus Grant Woodman Uten tilgangsbegrensning - 1909 |
Vanlige uttrykk og setninger
acetic adulterated alcohol algæ alkaline ammonia ammonium amount apparatus barium hydroxide beaker boiling bottle burette butter c.c. of water carbon dioxide casein cent Chem Chemistry chlorine color compounds contain cubic centimeters determination digestion dilute dish dissolved distilled water Elements Engineering ether evaporate extract Fehling's solution filter filtrate flask glass grams heat human hydrochloric acid ignited inches iodine laboratory Large 12mo liquid liter Manual Materials Mechanics method micro-organisms milk mineral minutes Nessler nitric acid nitrogen obtained odor organic matter oxidation oxygen phenolphthalein pipette platinum polluted portion potassium precipitate present proteids quantity residue rubber salts sample Sanitary sewage shaking sodium carbonate sodium hydroxide solids soluble solution specific gravity standard starch stopper stream substances sugar sulphate sulphuric acid surface-waters Tables temperature Text-book thiosulphate tion titration Treatise tube vanillin vegetable volume wash water-bath water-supply weight wine ΙΟ
Populære avsnitt
Side 160 - That the term blend as used herein shall be construed to mean a mixture of like substances, not excluding harmless coloring or flavoring ingredients used for the purpose of coloring and flavoring only: And...
Side 157 - That for the purposes of this act an article shall be deemed to be adulterated: In case of drugs: First, If, when a drug is sold under or by a name recognized In the United States Pharmacopoeia...