TESTS 1469 



TABLE OF TESTS.— Continued. 



TESTS 



Name. 



Use. 



Reagents. 



Reaction. 



Application. 



Remarks. 



Andreasch's test. Iron 



(a) Ammonia, (b) Sul- Dark purplish-red, Add a arid 6 to liquid, 

 phoglycolic acid. soon fading, but 



Irestorea on 

 shaking with 

 air. 



Potassium bichromate Emerald-gr 

 i, strong sulphuric color. 



To R. add urine, drop i Reaction signifies 



by drop. j presence of toxic 



amount of alcohol. 



Anstie's test. 



j Alcohol in urine. 



I, strong sulphuric 

 acid 300. 



een 



\ntipyrin-test. 



Antipyrin in urine, I See Ferric-chlorid test. 

 etc. 



\usten and Cham- ] Nitric acid. 

 berlain's test. 



Ammonio-sulphate of Rose-red color, 

 iron 200, water 1000, 

 sulphuric acid 20. 



Add R. to solution. 



Vutenrieth and Phenacetin. 

 Hinsberg's test. 



Nitric acid. 



Yellow substance, . To finely powdered . Antipyrin and ace- 

 crystallizing out phenacetin add 10 to I tanilid do not 

 in needles. 12 per cent. R.; heat ' respond, 



to boiling. 



Vxenfeld's test. 



Albumin in urine. 



(a) Formic acid. (*) Rose or purple 

 Sol. HgClj (1:1000). j color. 



Acidulate with a; add Not reliable, 

 a few drops b. 



z 



eier's test. Alkalies. 



Sol. of tannin. | Red to reddish- Add R. to the liquid, 



brown, turning 

 ! into dirty-green. 



s test. ' Eosin. 



(a) Sodium-amalgam. Opaque- green Shake substance with 1 

 (*) Sol. of potass. . color in reflected water and a, heating ' 

 permanganate. light. gently ; dilute with 



water; add drop of b. 



Wiley's test. Nitric acid 



Cyanhydrargyrate of Crystal of R. turns Introduce crystal of R. 

 potass, iodid (one black; red in into liquid, 

 equivalent each mer- other acids, 

 curie c y a n i d and > 

 potass, iodid). 



•ailey's test. Sulphur 



(a) Sodium carbonate. 

 (b) Sol. sodium nitro- 

 prussid. 



Blood-red color. 



Heat substance with a, 

 dissolve in water, 

 and add b. 



' arbsche's test. Glycerin 



(a) Water 20 vol., car- 

 bolic acid one drop. 

 ( A ) Sol. ferric chlorid. 



Blue color not 

 developed. 



Add to liquid a , then 

 one drop b. 



areswils' test. 



Glucose. 



Potass, hydrate 60, 

 potass, tartrate 40, 

 water 200. Mix with 

 copper sulphate 65, 

 water 500. 



Red precipitate. 



Boil liquid with R. 



arford's test. 



Glucose. 



Sol. neutral copper 

 acetate 200, 38 per 

 cent, acetic acid 5. 



Red precipitate. 



Add a few drops R. to 

 liquid and boil. 



arium-chlorid Ether- sulphuric (a) Sol. barium chlor- Ppt. of barium sul- 

 acids in urine. id. (b) Hydrochlor- phate. 



ic acid. 



Add a in excess ; fil- 

 ter ; boil filtrate with 

 b. 



arium -chlorid ! Sulphates in urine, 

 test. 



Barium chlorid (or White precipitate, 

 nitrate). 



Acidulate urine ; add Creamy ppt. : sul 



phates increased ; 

 milky: normal ; 

 translucent: di- 

 minished. 



irry's test. 



Hydrocyanic acid. 



(a) Acetic acid. 

 Silver nitrate. 



(b) Cloudiness. 



Two or three drops of 

 sol- acidified with a, 

 in watch-glass. 

 Cover with another 

 watch-glass contain- 

 ing 2 or 3 drops b. 



Bile-pigment. 



(a) Chloroform. 

 Nitric acid. 



(*) Play of colors, Shake liquid with a ; i Very delicate, 

 finally ruby-red. decant; allow to! 

 evaporate ; add drop 

 , of*. 



istelaers test. 



I 



Phosphorus in tis- | (a) Ether. (*) Strong Pure phosphorus ; Dissolve out P. with 



sues and ejecta. 



ammonia, (c) 

 sulphuric acid. 



Dd 



recognized by its 

 properties. 



a, by repeated shak- 

 ing ; allow to evapo- 

 rate, adding water 

 toward end of evap- 

 oration ; w a r m to 

 50° or 6o° C. Shake 

 with b; wash with 

 c, then with water. 



