Table 1-2. Abstract of Conversion of Conductivity Ratio to Salinity Table. 



Table for 0.0000 to 1.3999 conductivity ratios (equivalent to O.OOO to 50.00 %o salinity) is furnished with each 



turned to the Fill position, the contents of the 

 cell will drain out through the fill tube and can 

 contaminate the balance of the sample. 



1-22 Analysis of Salinity Samples. — The 



analysis of salinity samples should be recorded 

 on Log Sheet-DDD (fig. 1-14) and should in- 

 clude the following processes : 



1. Standardization. — Standardization is per- 

 formed before and after the analysis of a 

 series of salinity samples. Its purpose is to pro- 

 vide a direct reading of a conductivity ratio 

 corresponding to the exact salinity of a stand- 

 ard sea water sample. Because the conductivity 

 ratio usually drifts during the analysis of a 

 series of salinity samples, the standardization 

 and the salinity sample run operations should 

 be performed without interruption. Standardi- 

 zation procedures include the following steps : 



Step 1. Enter ship, cruise number, station 

 number, and bridge number (Salinometer Se- 

 rial Number) in the appropriate blocks of the 

 DDD-Sheet. 



Step 2. Transcribe the Serial No. Salinity 

 Bottle No. column number from the Log 

 Sheet-A to the Serial Number column of the 

 DDD-Sheet, and enter salinity sample bottle 

 number (number on sample bottle) in the Bot- 

 tle Number column next to the appropriate se- 

 rial number. Arrange the series of samples to 

 be run in order of increasing depth. 



1-14 



Step 3. Open a vial of standard sea water 

 (see par. 1-2), and compute the salinity by the 

 formula 



Salinity %„= 0.030 -M.805 (CI %») 



Step 4. Enter the letters Std and the number 

 1 in Bottle Number column, and on the same 

 line, enter the salinity of the standard sea water 

 in the Nominal Salinity %o column. 



Step 5. From Conversion of Conductivity 

 Ratio to Salinity table (see table 1-2), deter- 

 mine the conductivity ratio for the Std 1 salin- 

 ity, and enter this value in the Conductivity 

 Ratio Average column ; then, set the salinometer 

 Conductivity Ratio dials to this value. 



Step 6. Fill the sample cell with the standard 

 sea water, and set the Function Selector knob to 

 Temperature. 



Step 7. Set the Stir Fill switch on Stir, and 

 adjust the two Temperature °C controls to ob- 

 tain a zero reading on the null indicator. Enter 

 the resulting temperature reading in the Sam- 

 ple Temj). block. Left dial digits are tens ; right 

 dial digits are units, tenths, and hundredths. 

 Drain the sample cell. 



Step 8. From Temperature Compensation 

 Dial Settings table (see table 1-3), determine 

 temperature compensation dial settings for 

 sample temperature, enter this value in the 

 Temp. Comp. Dial Setting block, and set Tem- 

 perature Compensation knobs (Q) to the 

 number. 



