APPENDIX. 



LABORATORY EQUIPMENT. 



The necessary equipment for a small laboratory about to engage in 

 the ordinary routine testing and inspection of bituminous materials 

 is given in the following list. The maximum cost, exclusive of 

 platinum ware, solvents, and chemicals, should not exceed $300, and 

 the material could no doubt be purchased at a lower figure by secur- 

 ing bids on the entire equipment from several of the chemical supply 

 houses, 



For the extraction of bituminous aggregates, the recovery of the 

 bitumen, and examination of the aggregates, the additional equip- 

 ment described for that work will be required at an additional cost of 

 approximately $150. 



APPARATUS. 



1 analytical balance, capacity 100 grams, sensitive to 0.1 milligram. 



1 set of weights, 50 grams to 5 milligrams, with rider. 



1 rough balance, capacity 1 kilogram, sensitive to 0.1 gram. 



1 stop watch. 



1 Engler viscosimeter.' 



1 penetrometer, with seconds pendulum or metronome. 



1 Xew York State Board of Health oil tester. 



1 open cup oil tester with Bunsen burner. 



1 aluminum float with 3 brass collars. 



1 cubical brass mold. 



1 brass plate 5 by 8 centimeters. 



1 metal cover for melting point apparatus. 



] constant temperature oven. 



1 thermo-regulator. 



1 hot plate 14 by 18 inches. 



I steam I 



I! drying oven. 



osen burners. 

 I pinchcock. 

 4 iron trij 

 4 iron ring supp 

 :; rings for ring support, 7.5 centimeters in diameter. 



er clamps. 

 :', buretb 



"-, LO by L0 centimeters. 



; inches deep by 9 inches in diameter, 

 l tin shield. 



6 L-pint tin cup , < am] 

 <; i quart tin cups, seamless. 

 12 tin boxes 6 centimeters in diameter by 2 centimeters deep, 



43 



