CENTRAL SCIENTIFIC CO., CHICAGO. TJ. 8. A. 



293 



7020. 

 7021. 



7032. 

 7033. 



No. 7020. 



No. 7028. 



No. 7024. 



GAS PIPETTES 



GAS PIPETTE, Hempel's Simple Absorption, for solid or liquid reagents, mounted on japanned 



iron support with adjustable clamps $1.25 



GLASS PARTS only of No. 7020 2.30 



7024. GAS PIPETTE, Hempel's Simple Absorption, for liquid reagents only, mounted on iron sup- 



port 3.90 



7025. GLASS PARTS only of No. 7024 2.00 



7028. GAS PIPETTE, Hempel's Double Absorption, for solid and liquid reagents, mounted on iron 



support 5.00 



7029. GLASS PARTS only of No. 7028 3.00 



No. 7032. No. 7036. No. 7040. 

 GAS PIPETTE, Hempel's Double Absorption, for liquid reagents only, mounted on iron sup- 

 port 5.00 



GLASS PAETS only of No. 7032 3.00 



7036. GAS PIPETTE, Hempel's Simple Absorption for Ethylene, with glass beads, mounted on iron 



support 5.25 



7037. GLASS PARTS only of No. 7036 3.30 



7040. GAS PIPETTE, Hempel's Simple Explosion, with glass stop-cock and platinum electrodes, 



mounted on iron support 9.00 



7041. GLASS PAETS only of No. 7040 .' 6.00 



No. 7044. MUMM^ No. 7043. 



7044. GAS PIPETTE. Hempel's Explosion, with stop-cock, platinum electrodes, separate leveling bulb 



and connecting tube, mounted ou iron support 9 50 



7045. GLASS PAETS only of No. 7044 6.00 



7048. GAS PIPETTE, He'mpel's Explosion, tall form with electrodes for producing oxygen and hydro- 



gen, mounted on iron support 10.00 



7049. GLASS PAETS only of No. 7048 730 



