LABORATORY SUPPLIES AND CHEMICALS 



147 



2738 



2740 



2744 



2746 



2748 



2738 FLASKS, Chemical, flat bottom, heavy ring around mouth to bear tight corking. 



Non Sol glass. 



Cap cc ...."...." 250 500 1000 2000 



Each $0.30 .37 .54 .77 



2739 FLASKS, Flat bottom, Pyrex glass, with heavy ring neck. 



Capacity, cc 500 700 1000 1500 2000 3000 6000 12000 



To take rubber 



stopper, No 6 6 7 7- 9 9 10 10 



Number in original case 72 36 36 24 24 12 12 6 



Each ." $0.38 .47 .55 .66 .78 .99 1.75 3.30 



2740 FLASKS, Chemical, round bottom, vial mouth. Non Sol glass. 



Capacity, ounces 1 2 4 8 16 32 64 



Each .".' ....$0.12 .14 .16 .25 .35 .55 .78 



2742 FLASKS, Round bottom, Pyrex glass, with vial mouth. 



Capacity, c.c 100 150 200 300 400 500 700 1000 1500 2000 3000 



To take rubber 



stopper, No... 2334447 5 7 9 10 



Number in 



original case.. 84 ISO 144 84 72 48 42 30 24 18 12 

 Each $0.17 .20 .22 .28 .32 .37 .45 .56 .71 .79 1.07 



2744 FLASKS, Conical, with lip, so-called Beaker Flasks, Nonsol glass. 



Capacity, ounces 2 4 8 16 32 



Each $0.20 .20 .30 .45 .75 



2746 FLASKS, Copper determination, Nonsol glass, pear shaped, wide mouth. 



Capacity, ounces 6 8 



Each $0.20 .30 



2748 FLASKS, Kje-ldahl, Pyrex glass, with long neck and round bottom. 



Capacity, c.c 300 500 800 



Outside diameter of neck, mm 30 31 35 



To take rubber stopper, No . 5 6 6 



Total length, mm 298 327 365 



Number in original case : 60 36 36 



Each $0.28 .37 .45 



The 200 C C furnished also in 9> inch overall length, packed 60 



pieces per original case. 

 The 500 C C furnished also in 9J4 inch overall length, packed 48 



pieces per original case. 

 The 800 C C furnished also in 11 inch overall length, packed 36 



pieces per original case. 



2,749 FLASKS, KjeldahFs, Pear shape, of Copper, with extra long necks, for Nitro- 

 gen determination. 

 Capacity, 900 c.c., each $5.00 



2749 (a) FLASKS, Kjeldahl's, made of heavy copper, 4 inches in diameter, 8^ 

 high, capacity about 1000 c.c. Made especially for the deter- 

 mination of Nitrogen by the Kjeldahl method. 

 Each $4.50 



