COUNCIL — SEPT. 1910 - APPEND. C —in- 

 stated that the use of the standard water had also spread beyond the international 

 cooperation, considerable quantities having been sold for example to Monaco and 

 California. A great number of tubes had also been sold to polar expeditions 

 (e. g. Amundsen's). 



Report on standard-water: 

 June 1st 1909-May 31st 1910. 



In January 1910 a new supply of standard-water was prepared in accordance 

 with the method of preparation of the standard-water Pg (Rapp. et Proc.-verb. des 

 Réunions, vol. XII, page 44, § 5). 



The sea water used for the preparation of the new standard-water was 

 taken in the Atlantic Ocean between 58° 50' N — 14° 48' W and 58° 43' N — 

 16°35'W. 



The Gl-va!ue of this water was 19.48 and by addition of distilled water, it 

 was brought down to the amount wished. 



In January and February 1910 the standard- water thus prepared was ana- 

 lysed and compared with P^ (Gl = 19.347) and with P (Primary standard-water, 

 CI = 19.4482) by a series of Volhard's titrations. Three tubes of the new standard- 

 water were compared with P and gave the results: 19.3730, 19.3726, 19.3720 and 

 the mean of these three, 19.3725, rounded up to 19.373 gave the Cl-value of the 

 new standard- water. This was called Pg (CI = 19.373). 



The analyses were carried out at "Polyteknisk Laereanstalt" by J. P. 

 Jacobsen. 



Account of stock of standard-water 

 June 1st 1909 — May 31st 1910. 



1909 June 1st. Amount of Primary standard-water P 79 tubes 



1910 May 31st. — - — — P 75 — 



Consumption for preparation of Pj. . . 4 tubes 



1909 June 1st. Amount of standard-water Pg 297 tubes 



1910 May 31st. — - — Pg (to be kept back) 3 — 



Consumption. . . 294 tubes 



1910 Jan. 6th. Amount of standard-water Pg 707 tubes 



1910 May 31st. Rest-amount of standard-water Pg 643 — 



Consumption... 64 tubes 



The consumption of standard-water Pg: 294 tubes comes out as follows: 



