Salifert test?

[scottwhitson]

I mainly use salifert test kits but have a question about them. When you put the tip on the 1ML syringe and draw the solution in do you then purge the excess air out of the syringe a couple of times or do you just put the tip on and draw it to 1ML and that is good? If you purge the air out of it a couple of times you can get the solution to about .85ML+ if you don't then it comes up to around .80ML this amount can change your results by about 100 on the magnesium tests.

 

[goochesfish]

I don't purge but make sure the barrel and the syrinyge is completely empty before you draw up the solution. Consistensy is the key.

 

[scottwhitson]

Anyone else?

 

[Spssteven]

do not purge the reason you come up short is because the fluid is in the tip and the number scale wasnt designed for a tip to be used. dont puge