LABORATORY SUPPLIES AND CHEMICALS 



67 



2071 



2072 



2073 



2074 



BURETTES FOR PRECISION WORK 



These burettes have circular markings (all around) for very accurate reading; 

 they are graduated with extreme care with distilled water at 15 C. by weighing on a 

 delicate balance and are standardized to meet the requirements of the National Bureau 

 of Standards, Washington. A certificate of accuracy can be supplied with each instru- 

 ment, if desired, at a nominal cost. 



2071 BURETTE, Mohr's, with tip and connection, for pinch cock. Graduated to meet 



the requirements of the U. S. Bureau of Standards. 



Capacity, c.c 25 50 100 



Graduated to c.c 1-10 1-10 1-5 



Each $5.00 6.50 7.50 



2071a BURETTE, "Normal," Mohr's, with tip and connection, for pinch cock. Stand- 

 ardized by the National Bureau of Standards, Washington, D. C. 

 with control stamp and certificate of corrections. 



Capacity, c.c 25 50 100 



Graduated to c.c 1-10 1-10 1-5 



Each $8.50 10.00 12.50 



2072 BURETTE, Geissler's, with straight stop-cock. Graduated to meet the require- 



ments of the U. S. Bureau of Standards. 



Capacity, c.c 25 50 100 



Graduated to c.c 1-10 1-10 1-5 



Each $6.00 7.50 9.00 



