GASTRON 



AT THE THRESHOLD 



To gastric juice Nature assigns the role of a powerful antiseptic. 



GASTRON, an extract of the actual tissue juice of the entire stomach 

 mucosa, contains all the soluble, the activable constituents of the gas- 

 tric juice itself in a carminative agreeable solution with 0.25 per cent 

 hydrochloric acid, organically bound. 



At the threshold of the digestive tract Gastron may be utilized as a 

 physiological recourse against fermentative dyspepsia, to supplement 

 and fortify impaired digestion. 



Gastron is alcohol free. 



Fairchild Bros, & Foster 



NEW YORK 



LaMotte Standards 



GUARANTEED 



Section 1. — Standardized Indicator dyes. Covering a wide range of H-ion con- 

 centration. Supplied in dry form and in sterile stocksolutions. Each Indicator 

 is standardized in strict accordance with the specifications of Clark & Lubs. (Jr. 

 Bact,, Vol. II, Nos. 1, 2, 3, 1917.) 



Common Name 

 Thymol Blue (acid range) 

 Methyl Orange 

 Bromphenol Blue 

 Resorcin Blue 

 Methyl Red 

 Bromcresol Purple 

 Litmus (special) 

 Bromthymol Blue 

 Phenol-Red 

 Cresol Red 



Thymol Blue (alkaline range) 

 Cresol-phthalein 

 Phenol-phthalein 



Section 2-B. — Specially prepared and standardized Buffer salts and solutions. 

 Buffer mixtures may be obtained in series covering any particular range of H-ion 

 concentration from Ph 1.0 to 10.0. 



Standardized Buffer Solutions (M/5) 



Potassium Phosphate Potassium Phthalate Sodium Hydroxide (COs free) 



Potassium Chloride Hydrochloric Acid Di-Sodium Phosphate, 2HiO 



A large number of general synthetic and purified compounds are manufactured by 

 us and information concerning them may be obtained by addressing 



LA MOTTE CHEMICAL PRODUCTS CO. 



"Standards Department" 

 13 W. Saratoga St. Baltimore, Md. 



