TESTING FOR BUTT.SRFAT 613 



at least 5 mm. below the lowest and above the highest graduation 

 mark. The top of the neck shall be flared to a diameter of not less 

 than 10 mm. 



Bulb. The capacity of the bulb up to the junction of the neck 

 shall not be less than 45 cc. The shape of the bulb may be either 

 cylindrical or conical with the smallest diameter at the bottom. If 

 cylindrical, the outside diameter shall be between 34 and 36 mm. ; if 

 conical, the outside diameter of the base shall be between 31 and 33 

 mm. and the maximum diameter between 35 and 37 mm. 



The charge of the bottle shall be 9 grams. All bottles shall 

 bear on top of the neck above the graduations, in plainly legible 

 characters, a mark defining the weight of the charge to be used (9 

 grams). 



The total height of the bottle shall be between 150 and 165 mm. 

 (5% and 6 l / 2 inches), same as standard milk test bottles. 



Cream Test Bottle 2. 50 per cent 9 gram long-neck-cream test 

 bottle, graduated to 0.5 per cent. The same specifications in every 

 detail -as specified for the 50 per cent 9 gram short-neck bottle shall 

 apply for the long-neck bottle with the exception, however, that the 

 total height of this bottle shall be between 210 and 235 mm. (8% 

 and 9 inches), that the total length of the graduation shall be not 

 less than 120 mm., and that the maximum error in the total gradua- 

 tion or in any part thereof shall not exceed 50 per cent of the volume 

 of the smallest unit of the graduation. 



Cream Test Bottle 3. 50 per cent 18 gram long-neck cream 

 test bottle, graduated to 0.5 per cent. The same specifications in 

 every detail as specified for the 50 per cent 9 gram long-neck bottle 

 shall also apply for the 18 gram long-neck bottle, except that the 

 charge of the bottle shall be 18 grams. All bottles shall bear on top 

 of the neck above the graduation, in plainly legible characters, a 

 mark defining the weight of the charge to be used (18 grams). 



Pipette, capacity 17.6 cc. Total length of pipette not more than 

 330 mm. (13J4 inches). Outside diameter of suction tube 6 to 8 

 mm. Length of suction tube, 130 mm. Outside diameter of deliv- 

 ery tube, 4.5 to 5.5 mm. Length of delivery tube, 100 to 120 mm. 

 Distance of graduation mark above bulb, 15 to 45 mm. Nozzle 

 straight. To deliver its contents when filled to the mark with water 

 at 20 C., in five to eight seconds. The maximum error shall not 

 exceed 0.05 cc. 



Acid measure, capacity 17.5 cc. 



