CHAS. LENTZ & SONS 
Blood Serum Ouens 
No. 2240 
2240. Apparatus for coagulating blood serum, after Koch. 
These ovens are made of solid copper, double-walled, tinned on the inside 
and covered with asbestos. The glass top is covered with felt. It has openings 
for thermometer and gas regulator ; water level and drip cock. The two front 
legs move in grooves, so that the tilt can be adjusted according to the amount of 
media used. Same as used by Board of Health, Philadelphia, etc. 
Size, i6 X 14 X 2^ inches deep, inside, price . . 
" 12 X 10 X 2^ " " " " . . 
Thermometer, 150° C, extra 
Gas regulator, special, for water chamber, extra 
Triple bunsen burner or ring burner, extra . . 
$30 00 
18 00 
1 25 
2 50 
1 50 
60 
