CENTBAL SCIENTIFIC CO., CHICAGO, U. B. A. 



405 



No. 



10490. 



No. 



10492. 



No. No. 

 10496. 10498. 



No. 



10502. 



No. No. 

 10506. 10510. 



No. 

 10514. 



No. 

 10516. 



No. 



10520. 



No. 



10524. 



10490. PIPETTE, Mercury, for taking up drops without danger of drawing them into the mouth $0.35 

 10492. PIPETTE, Mercury, for handling small drops of mercury 35 



10496. PIPETTES, Mohr's, accurately graduated in ec and fractions. 



No A B C D E F G H J K 



Capacity, ce- }{ 1 1 2 5 10 20 25 50 100 



Graduated to, cc.. Hoo Moo Mo Mo Mo Mo Mo Mo Mo Mo 



Each 40 .45 .40 .35 .40 .45 .55 .60 1.00 1.10 



* 



10498. PIPETTES, Mohr's, same as No. 10496, but with glass stop-cock. 



Capacity, cc 25 50 



Graduated to, cc ' Mo Mo 



Each 1.70 1.90 



10502. PIPETTES, Ostwald, as used in the determination of nitrogen, urea and ammonia in urine by 

 the Folin method. 



Capacity, cc 1 2 



Each 1.00 1.00 



10506. PIPETTES, Serological, similar to No. 10496, but graduated to the extreme tip. 



No A B C D E 



Capacity, ce }io 1 1 5 10 



Graduated to, cc ^ioo }{oo Mo Mo Mo 



Each 30 .40 .30 .30 .35 



10510. PIPETTE. Sucrose, capacity 52.096 cc, graduated from 5" to 25 on the Brix scale in Mo tus 2- 50 

 PIPETTE, Viscosity, see Nos. 10420-2. 



10514. PIPETTES, Volume or Transfer, with bulb approximately in middle of tube. 



Capacity, ec 1 2 3 5 10 12 15 20 25 30 50 75 100 200 



Each ..' 10 .11 .12 .15 .17 .20 .24 .26 .28 .30 .35 .45 .50 .60 



10516. PIPETTES, Volume or Transfer, without bulb, as used in bacteriological work and water anal- 

 ysis. 



Capacity, cc 1 5 10 



Each 10 .15 .25 



10520. PIPETTE, Wassennann Safety, for bacteriological and serological work, designed to prevent 

 any danger of infection in handling samples. Sliding the glass cap upward with tubulation 

 closed by the finger fills the pipette. Delivery is controlled by the finger. Graduated from 

 the tip to 1^0 cc in Mooths 80 



10524. PIPETTES, Water Analysis, as used in the Hygienic Laboratory of the United States Public 

 Health Service. Set consists of three pipettes; one 11 cc pipette graduated at 0, 10 and 11 

 ce; one 10 ec pipette graduated from to 10 cc in single cc; and one 2 cc pipette graduated 

 from to 1 cc in Mflths and with mark at 2 ee. 



Capacity, cc 2 10 11 



Each 30 .30 .35 



PIPETTES, Weighing, see Bottles, Weighing. 



