LABORATORY SUPPLIES AND CHEMICALS 



1073 



1073 ASPHALT FLOW PLATE. Set consisting of two plates, each with six 



corrugations, and one mould $5.00 



1074 



1074 EXTRACTOR. New York Testing Laboratory. For the analysis of paving 

 mixtures containing broken stone. These extractors are 

 made entirely of metal. (Detail information and instruc- 

 tions furnished upon request.) Complete extractor $35.00 



1075 



1075 RING AND BALL, for melting point test $1.00 



NOTE: We are in position to furnish special apparatus for testing various grades 

 of tar, ^ oils, etc. Send us your list of requirements for quotation. For Hydrometers, 

 Thermometers, Metronomes and Stop-Watches used in connection with asphalt testing 

 see under individual headings. 



