Mastertronic users thread

[tapeworm123]

Use,s like .5 or so if I remember correctly of b and like 1ml of A. Get two Red Sea phosphate reagents , they are the most expensive tho

 

[tapeworm123]

Test for iodine too

 

[DiscoStuart]

Need two kits I made the same mistake and had like 5 mls to test with.

ugh. Shame their documentation is wrong! Will have to pick another one up when I next make an oder/visit a shop that stocks them (my LFS has almost no marine dry goods)

 

[DiscoStuart]

Also the manual says Nitrate measurement range is 0-40, or 0-60 if using API.

But I just got a >=20.00 mg/L result. Nitrates are low 20s per Hanna, but I expected a specific result up to 40 (using TM).

Something off with my unit/test?

 

[tapeworm123]

Do you have the special magnet ?

 

[tapeworm123]

Thicker magnet ?

 

[DiscoStuart]

Thicker magnet ?

I’ve got the thicker one. But the results are right, the issues seems to be that the manual is incorrect and if you are using TM for Nitrates, it is precise up to 20 and over 20, you just get “>20”

 

[DiscoStuart]

I got confirmation from MT support that for TM, Nitrate testing only goes up to 20. Didn't get a good reason why the manual wasn't updated. But at least it was working correctly.

But, after that brief window of things working and MT and Hanna lining up for a bit, now the MT has dropped much lower. For example, No3 on the MT is now 8, and on Hanna 25. Phosphate was 0.01 on MT, 0.06 on Hanna and visually looking at a Red Sea test was also 0.06 (which is the reagent I put into the MT).

I recalibrated syringe and motors and all fine. I've got a reference solution coming to confirm - but given the MT previously matched Hanna, it feels like something has to have caused the drift.

But if hoses are pumping out the right amount of fluid and the syringe is calibrated, I'm not sure where the problem could be. Any ideas?