Ocean Pure Salt test

[Quagmire]

strange,mine tested much higher mg and alk,but the same ca.I also had some no3 but only .5ppm

New salt=Oceanpure
Fresh mix
ca = 380
alk= 12/4.28
mg = >1400 color changed to dark purple/tinge of blue rather than grey/blue tested 2x
no3= .5

New Salt @24hrs
ca = N/A picked up precip from mixing container tested 2x,first was 500,second no color change.
alk= 11.8/4.23
mg = 1470 definate color change this time
no3= .5

These tests were 2 weeks ago,Ive tested the tank since but not the fresh salt mix.I need a couple new test kits,so maybe next week I'll give it another shot and see what comes up.