Did I do this right?

[paraletho]

I upped Randy’s DIY Salinity standard for hydrometers to 1000 ml by using 38.3 grams of Morton salt.

 

[mmorrison55]

@Randy Holmes-Farley

 

[paraletho]

The main reason I ask is my Hydrometer reads 020 and the cheaper swing arm 023

 

[KStatefan]

I upped Randy’s DIY Salinity standard for hydrometers to 1000 ml by using 38.3 grams of Morton salt.

To produce a 3.714 weight percent sodium chloride solution, dissolve 1 teaspoon (6.20 grams) of Morton's Iodized Salt in 161 mL (161 g) of fresh water (making a total volume of about 163 mL after dissolution of the salt). This solution can be scaled up as desired.

1000 / 161 = 6.211118 times 6.20 grams = 38.5 grams to 1000 ml of RODI.

 

[Randy Holmes-Farley Verified Community Expert]

The main reason I ask is my Hydrometer reads 020 and the cheaper swing arm 023

Floating glass hydrometers typically need a temperature correction. The swing arm won’t.

The 38.3 g (if accurate) is close enough. Don’t bother redoing it.